Season 4

2004 - 2005

8 October 2004 - 13 May 2005

77. Storm Front Part 1 As the Nazis transport Archer in a jeep, they are ambushed by the Resistance. Archer is taken to Alicia Silvers, who nurses injured Resistance fighters. She assumes from his insignia that he is a sailor who survived the sinking of the USS Enterprise. Her friend Sal introduces Archer to a man who has seen an alien in New York. In the captured White House, the alien Vosk assures a Nazi officer that their new weapons will protect them from attack. They plan to poison the water supply as part of the Nazi eugenics program to eliminate non-Aryan races. Vosk instructs the officer to procure equipment for his project. He has determined that Archer's communicator originates from the future and wants him captured. On Enterprise, the crew picks up Nazi broadcasts and Tucker asserts that they must be in the 1940s.

They find a dying Daniels aboard and, when he is able to speak, tells them that the Temporal Cold War has reached a critical phase, with many eras in history being tampered with. It is Daniels that has brought Enterprise to 1944, a pivotal time when they may be able to stop the faction behind the changes. In Engineering, the Suliban Silik attacks Tucker. He claims that the crew will not be able to comprehend what is happening and steals a shuttlepod. Tucker and Travis beam down to the planet and destroy the shuttle to prevent the Nazis capturing it, but are unable to locate Silik. Archer and Alicia confront an alien who explains that they are helping the Nazis to win the war in return for help to build a temporal conduit to their own time. When more Nazis arrive, Archer retrieves his communicator and Sal kills the alien. Archer then calls Enterprise and T'Pol has them beamed up to safety. However they cannot get a lock on Tucker and Travis due to interference caused by the shuttle explosion and the pair are captured. Before he dies, Daniels warns Archer about Vosk, the fanatical alien leader who is destroying all of time and must be stopped before the time conduit can be completed.

78. Storm Front Part 2 Hitler arrives in New York to view his new acquisition. At the White House, the Nazi officer confronts Vosk, demanding that he fulfil his promises, only for the alien to threaten to erase his race from history. Vosk concedes that their prisoners Trip and Travis may not be temporal agents, but thinks their presence in the 20th Century may be more than coincidence. Aboard Enterprise, Alicia advocates assaulting Berlin with the starships weapons, but Archer refuses and says there must be a better way to resolve the situation. Vosk contacts Archer offering to turn over his prisoners in return for a parley. Travis and Trip are beamed back aboard and Archer meets with the alien leader. He claims that Daniels' people have their own agendas and also tamper with the timeline for their own ends. Provided Archer helps him, Vosk promises to restore the Earth timeline to its original state. As Phlox tends to Trip in sickbay, Archer begins to tell him about the temporal conduit. A glance at the computer readout however reveals that Trip is in fact a Suliban. Silik has assumed Tucker's form to steal the schematics of the alien plant. The two tussle until Phlox administers Silik a sedative. Vosk contacts Enterprise and tells Archer that data has been stolen by a 22nd Century thief. He threatens to fire on Enterprise if the data is not returned. In the resulting fire fight Enterprise sustains damage. The ship's sensors cannot locate the conduit or disable the alien shields. Silik volunteers to help Archer get into the plant housing the conduit to place a beacon for Enterprise to target, while Alicia calls on members of the Resistance to help.

As Vosk prepares to use the conduit, he learns that the site has been breached. He orders his enhanced aircraft to fight off Enterprise, which has entered the atmosphere. But atmospheric conditions block Archer's signal to the ship and Silik is shot dead. Archer finds Trip and the pair beam up to the ship, where Reed fires on the plant. As Vosk enters the conduit, the plant explodes and he is killed.

Daniels turns up alive and well and shows Archer the timeline restored. Archer insists that Enterprise be sent back to its own time, wanting no more to do with the Temporal Cold War.

79. Home A hero's welcome greets the NX-01 crew in San Francisco. In a bar, Archer encounters Erika Hernandez, captain of the new SS Columbia NX-02, who invites him to tour her ship. At a briefing, Soval quizzes Archer about the Vulcan ship Seleya and why he did not do more to save the crewin the Expanse. Archer loses his temper with the Ambassador and Admiral Forrest orders him to take a vacation. Erika suggests they go climbing together. T'Pol and Trip visit Vulcan, to see her mother T'Les. She gives T'Pol a letter from her fiance Koss and tells her she should put the needs of her family before her own ambitions and desires. Trip tells T'Les of his romantic involvement with T'Pol, but T'Les is adamant that a relationship between a human and a Vulcan can have no future. Koss promises T'Pol that he will help T'Les regain her teaching role at the Vulcan Science Academy after the wedding. Phlox, Reed and Travis go to a bar together and get into a fight. Phlox has an instinctive Denobulan defensive reaction, inflating his face and scaring their attackers away. Phlox is troubled by these racist taunts, refusing to accompany Hoshi to dinner, commenting that humans may need some time before accepting that not all aliens pose a threat. Archer is woken by a nightmare in which he is attacked by Xindi. He admits to Erika that some of the choices he made in the Expanse trouble him. She is sure that any good captain would have done the same. When they return, Soval also concedes that Archer's actions were born of necessity and thanks him for saving Vulcan. T'Les admits that she was dismissed from the Academy accused of spying because she helped uncover the secret of P'Jem. Trip is upset when T'Pol tells him that she must go through with the wedding to Koss. T'Les asks him if he has told her daughter that he is in love with her. She believes that T'Pol should have all the facts before her marriage. Trip however elects to remain silent, allowing the ceremony to proceed.

80. Borderland. When a Klingon vessel rescues a shuttle found adrift, the two human passengers kill the crew and seize the ship. On Earth, Archer visits Dr Arik Soong in prison and tells him about the hijack. It transpires that 20 years earlier Soong had stolen embryos that had survived the Eugenics War and nurtured them to adulthood. It is these "Augments" that have attacked the Klingons and threatening to spark a war in the Borderland: a region of space between the Klingon Empire and the Orion Syndicate. Soong claims he can persuade the Augments to surrender peacefully; what is more, he knows the Borderland. The Augments are led by Raakin. He and Malik, who captured the Klingon ship, vie for the affections of Persis. Regarding him as the strongest, she chooses Malik and helps him kill Raakin to seize the leadership. Enterprise is attacked by Orions and nine crewmembers, including T'Pol, are beamed off the ship. Soong is the only person on board familiar with the Orion Syndicate trading system and he instructs Archer to follow the Orions. The captain beams down with Soong to a station where his crew are for sale in a slave auction. To prevent their escape, the prisoners have been fitted with neurolytic restraints. T'Pol is auctioned to a Tellarite. Archer and Soong locate the crew and use tritanium cobalt to disrupt the restraints. The prisoners riot when they find that the restraints no longer shock them. In the confusion, Archer beams his crew aboard Enterprise, while Soong stages his own escape. He manages to use a console to send a message before Archer recaptures him. Orion fighters attack Enterprise, claiming the crew as their property. The Klingon vessel of the Augments arrives and fights off the Orion assault. They dock and demand to see Soong. Archer refuses but Malik grabs Archer by the throat and the Enterprise crew submit to his demands. The Augments board and release Soong from the brig. They greet him as their father and warp away in the Klingon ship, leaving Enterprise is disabled.

81. Cold Station 12. Soong is seen in a flashback teaching the young Augments about the Eugenics Wars and tells them that someday they will find and wake others like them. Eleven years later their Klingon ship approaches CS-12 where the embryos are stored. Soong orders his Augments not to harm the station personnel. On the Augments' planet, Archer finds Smike, a handicapped Augment abandoned by his peers, and realises that Soong has taken incubators to CS-12 to mature the remaining eighteen hundred embryos. Soong and Malik clash when the doctor learns of Raakin's murder and Malik begins to distrust his mentor. The Augments hijack a Denobulan science vessel and use it to board and seize CS-12.

There they torture Phlox's friend Dr. Lucas to get him to reveal the access codes. On Enterprise, Archer decides to take Smike and Phlox on the away team to try to stop Soong. As they approach CS-12, Soong hails them threatening to kill Lucas. Archer decides use the transporter to sneak a team aboard but they are captured. Soong and Malik continue to torture the doctors to make Lucas submit, but Malik goes over the top and kills one of the scientists. When he discovers that Phlox and Lucas are old friends, Soong threatens him as well and Lucas finally relents, handing over the code. Soong hails Enterprise and informs T'Pol that he has Archer and the away team, but Archer orders her to destroy the station. The auto-destruct fails however and the Klingon ship fires on Enterprise, damaging one of the nacelles. Malik tries to release pathogens throughout CS-12 and, in the resulting firefight, Smike is killed while Soong and the Augments escape. As Enterprise launches a torpedo at the fleeing bird-of-prey, Archer locates the primary junction to stop the pathogens from killing everyone left aboard the station.

82. The Augments Archer decompresses the central core to expel the pathogen safely into space and is beamed aboard Enterprise. Using a faked Klingon warp signature, they then follow the Augments into Klingon space. On the bird-of-prey, Soong suggests that they hide in the Briar Patch but Malik prefers to make a stand. He becomes incensed when he learns that Soong has been altering the embryos to temper their violent natures. When Enterprise comes in range, Archer threatens to fire on the Augment ship, but Soong has the Denobulan ship and pilot ejected into the atmosphere of a nearby planet. Enterprise is forced to launch a recovery mission, allowing the Augments to make good their escape. Malik tells Soong that he has pathogens to build a bioweapon. He intends to launch it at a Klingon world and incite a war between Starfleet and the Klingon Empire.

This should ensure that the Augments are left alone for quite some time. Soong accuses him of plotting mass murder so Malik decides to have him confined. Persis however helps Soong to escape in a lifepod and Malik kills her. When Enterprise is hailed by a Klingon warship, Archer tells them they are carrying the Chancellor from secret negotiations with the Orions. They then discover Soong's lifepod and Archer is initially suspicious of his loyalties. Soong insists that Archer must stop Malik using his bio-weapon and avert war. Then another Klingon vessel approaches and demands that Enterprise surrender, but Archer uses the grapplers to damage the warship and escape. Enterprise intercepts the Augments at their intended target. Malik deploys the bioweapon but Reed torpedoes it and disables the bird-of-prey. Malik overloads the reactor, destroying the ship but beams himself aboard Enterprise. He attacks Soong but Archer shoots him dead. Soong is returned to his prison where he announces that he intends to concentrate on cybernetics rather than genetics in the future.

83. The Forge In a visit to Vulcan, Admiral Forrest is hopeful that the High Command will sanction future joint missions with Starfleet. But he is killed in a terrorist explosion at the embassy.

In the rubble, the Enterprise crew find an un-detonated bomb and identify Vulcan DNA when they scan it. Phlox claims the DNA belongs to T'Pau, a known Syrannite. The Syrranites are a radical group who follow the teachings of Surak, the father of Vulcan logic.

Soval warns Archer not to trust the High Command but to investigate personally. Koss visits T'Pol and tells her that T'Les is a Syrannite and has gone into hiding. He gives her a family heirloom: an IDIC medallion containing a map of the Forge, a Vulcan desert. She and Archer travel to the desert, while Phlox learns that the DNA on the bomb had been planted, having been taken from T'Pau as an infant. In the Forge, T'Pol is telling Archer how Surak brought logic to Vulcan when they are confronted by a sehlat and they retreat up a hill. They are rescued by a Vulcan called Arev, who says he is a follower of the path of Surak in meditation. Archer claims to be a student of Surak's teachings and Arev leads them into the desert. An electrical sandstorm leads them to seek shelter in a cave. Arev sees T'Pol's IDIC and realizes that she is the daughter of T'Les. He guesses that Archer is the one who exposed the spy post at P'Jem and he agrees to lead them to T'Les at the sanctuary. By performing a mind-meld on a guard, Soval finds out that the head of Vulcan security planted the bomb. He confronts him in front of V'Las, the head of the High Command. But his telepathic evidence deemed inadmissible and Soval is shamed for his actions. Arev tells Archer the story of infinite diversity in infinite combinations: when Surak died on Mt. Seleya, his katra was transferred to another body, where any Vulcan who performs a mind meld can touch it. Lightning hits the cave, striking Arev down. In his dying moments, Arev melds with Archer, telling him to remember. As soon as the storm passes, Archer leads T'Pol into a hidden temple where they are seized by the Syrranites.

84. Awakening The High Command ask Soval to resign for his illegal melding. V'Las is planning to attack the Syrranites who, he insists, are responsible for bombing the embassy. Soval and Trip launch a mission to penetrate the Vulcan sensor grid with a shuttle and rescue Archer and T'Pol before V'Las can strike. Archer tells T'Pau of Arev's death and she reveals that he was Syrran, the founder of their group. Archer tells T'Pol that since Arev touched his head, he feels that he has an additional "something" inside him. T'Les explains to T'Pol that she joined the Syrranites because the High Command have strayed from the teachings of Surak and she hopes her daughter will join too. In a vision, Surak tells Archer that he has been chosen as his vessel because he is not Vulcan and as an outsider he can help return the people to their true path. He tells T'Pau about the vision and she touches his mind to confirm it, discovering Surak's living katra in Archer's head. She insists that it be removed. V'Las states that he wants no witnesses to his planned massacre. He hails Enterprise and orders Trip to break orbit, but he refuses. Mayweather and Reed launch a shuttle to retrieve Archer and T'Pol but they are forced to turn back by Vulcan fire. When Vulcan ships attack Enterprise, Soval advises they break orbit and Trip complies. When T'Pau tries to remove the katra from Archer's mind, Surak chooses to remain and instructs Archer to find the Kir'Shara - a lost Vulcan artifact. V'Las launches his assault on the Syrannite compound, but while others flee, T'Pau, Archer and T'Pol stay to hunt for the Kir'Shara within the caves. Deep within the sanctuary, Archer discovers the Kir'Shara hidden in a concealed chamber. They escape with the object, but find T'Les dying in the ruins. She tells T'Pol she is proud of her and dies. Meanwhile, Trip learns that the High Command plans to next attack Andoria and orders Enterprise to attend at maximum warp to avert interstellar war.

85. Kir'Shara The Vulcans have been masking their warp signatures to fool the Andorians. T'Pau and Archer travel to the capital, dodging electrical discharges, with hope that the Kir'Shara will make the High Command halt the attack on Andoria. Trip and Enterprise rendezvous with Shran, who abducts and brutally interrogates Soval. V'Las insists that the Kir'Shara is a myth and orders Talok to eliminate any surviving Syrannites. T'Pol tells T'Pau of her Pa'an syndrome and is informed that it has been caused by a lack of training in melding. T'Pau offers to heal her and the two meld. When Trip discovers Soval missing, he tracks the Andorian fleet to a nebula and fires on Shran's ship. Shran agrees to surrender the Vulcan ambassador and enlists the Enterprise' help in repelling the Vulcan invasion. Talok's patrol happen on Archer's party and after a skirmish, T'Pol is captured. Archer and T'Pau ambush the patrol to rescue her but Talok tells them that V'Las has her and he intends to execute her for treason. Enterprise helps Shran's squadron against the Vulcan fleet until reinforcements can arrive. Archer finally presents the Kir'Shara to the High Council and Kuvak has V'Las arrested, ordering the withdrawal of the fleet. Koss releases T'Pol from her marriage vows and Archer melds with a Vulcan priest, transferring Surak's katra to him. After the dissolution of the High Command, V'Las tells his Romulan contact that his plan has failed. But the Romulan assures him that reunification is inevitable.

86. Daedalus The inventor of the transporter, Emory Erickson, and his daughter Danica board Enterprise to test a powerful new sub-quantum transporter that might make starships obsolete. However, after a strange anomaly kills a crewman, it is revealed that Emory's true goal is to retrieve his son, Quinn, lost in a similar test some fifteen years previously. Although initially furious at the deceit, Archer agrees to help rescue Quinn from inside the anomaly. Eventually they manage to materialise him but he dies in his father's arms. Meanwhile, Trip and T'Pol agree to put their relationship on hold, while she studies the Kir'shara.

87. Observer Effect When Trip and Hoshi return from an away mission infected by a contagious silicon-based virus, Phlox is at a loss as to how to treat them. Meanwhile Travis and Reed have been possessed by alien entities, who are observing how the humans deal with the crisis. During the 800 years that they have observed humanoid species, the infected have always been abandoned or destroyed. Archer and his crew, however, refuse to give up hope of a cure.

To further study the crew, the aliens possess Trip and Hoshi and their discussions are overheard by Phlox. He tries to get them to help but they claim they are impartial observers and refuse. A radiation treatment proves ineffectual and Hoshi dies, but Archer is infected trying to resuscitate her. When Trip also dies, the aliens have a change of heart and reveal themselves as Organian, a non-corporeal species. They cure the crew members and miraculously return them to life. Although Archer retains no memory of the Organians, he orders that a beacon should be left in orbit to warn others of the danger.

88. Babel One Enterprise is transporting the Tellarite Ambassador Gral to Babel to establish a trade agreement with the Andorians, when they receive a distress message from Shran and divert to help him. Shran claims that a Tellarite vessel destroyed his ship but Gral refutes the charge and states that an Andorian cruiser would easily outclass a Tellarite ship. An Andorian warship then attacks Enterprise, ignoring Shran's demands to stand down. The ship's sensors reveal an anomalous power signature from the attacker that matches the signature of the Tellarite ship that assaulted Shran's cruiser. The vessel is also equipped with powerful spectral emitters and T'Pol identifies the technology as being of Romulan origin. Reed and Trip beam aboard but become trapped when the ship fires on Enterprise, disabling the transporter.

89. United The Romulan drone ship, in the guise of Enterprise, attacks a Rigellian vessel, leading the Rigellians to call for Archer's arrest. T'Pol and Travis conceive a sensor grid to track the drone which will require the cooperation of all parties: human, Vulcan, Andorian and Tellarite. Reed and Trip manage to shut down the warp drive on the drone but the Romulans trap them and flood their compartment with coolant. To save Trip's life, Reed agrees to repair the warp drive but then wires a bomb into a power coupling which gives them time to escape. When Talas dies of her wounds following a confrontation with the Tellarites, Shran insists on a duel with her killer. Archer offers to fight in the Tellarite's stead and beats Shran, reuniting the races against the Romulans. Enterprise retrieves Reed and Trip from the drone but it escapes. The drone returns to its base where the pilot is revealed as a white-skinned Andorian: an Aenar.

90. The Aenar The Enterprise crew realise that their enemy is a telepath and Shran suggets that the Aenar may be involved. The Aenar are a race that cohabits Andoria, who have a pacifistic nature and a strict policy of isolationism. They live in ice caverns below the surface of Andoria and although born blind are powerful telepaths. Archer and Shran descend into the Aenar's realm and meet with the chosen representatives Lissan and Jhamel. Lissan believes that the attack ship may be under the control of Gareb, Jhamel's brother. He had been abducted a year earlier on a mining expedition. Archer asks Lissan for help but she tells him that the Aenar will not become involved in any potentially violent act. Jhamel escorts the men back to the surface and Archer asks her if she will help to save her brother, but she is reluctant to violate her people's decision.

91. Affliction After a pleasant evening at a Chinese restaurant, Hoshi and Phlox are mugged on the walk back and the doctor is abducted. While T'Pol melds with Hoshi to search for clues, Reed tries to access satellite logs but finds the data has been erased. He contacts Starfleet and is ordered to meet an operative in secret. Phlox is in the hands of the Klingons. Dr Antaak and General K'Vagh explain that they need his help to develop a treatment for a deadly virus that has infected millions of Klingons. He initially agrees to help but discovers that the Klingons have been using Augment DNA from the salvaged Klingon bird-of-prey to perform genetic engineering experiments on Klingon convicts. The plague has been created as a result of these experiments. Phlox then refuses to help perfect the Klingon Augments to prevent them being exterminated by the Klingon fleet. Klingon ships attack Enterprise after they discover the wreckage of a Rigellian transport that Phlox had travelled on. Klingon Augments (without forehead ridges) board the starship and sabotage her. As they beam off, one is shot and is left behind. The Rigellian black box is found to have been wiped but Reed is implicated. He refuses to answer Archer's questions and is imprisoned with the Klingon. The sabotage is discovered to have compromised the warp matrix and, to reduce the pressure on the injectors, Enterprise must travel at warp 5.2. The ship cannot maintain the speed for long and, as the pressure builds, a warp core breach threatens.

92. Divergence Archer releases Reed from the brig to help transfer Trip from the Columbia while at warp. The two vessels fly within 50 metres and Trip is pulled from the Columbia airlock via a tether.

Trip then cold-starts the engines, erasing the Klingon sabotage by resetting all subroutines. Columbia then follows Enterprise to the Klingon colony to rescue Phlox. Archer tells Reed that his deleted logs have been reconstructed and his conspiracy with the secret agent Harris uncovered; he orders Reed to send Harris a message. Antaak and Phlox agree to arrest the augmentation process in its primary stage which, although causing cosmetic changes, will not allow physical enhancements. Fleet Admiral Krell has orders to destroy the entire colony if a cure is not found. General K'Vagh volunteers as a test subject, willing to risk his own life for his people. Archer's Klingon captive, K'Vagh's son Marab, reveals the whereabouts of the Klingon colony to save his people. Together Archer and Marab beam down and Archer volunteers to serve as a host to replicate antibodies to expedite Phlox's work. Meanwhile, the Klingon fleet arrives and engages the Starfleet vessels. To prevent the fleet from destroying the colony, Phlox beams a virus canister aboard Krell's ship, infecting the crew, then offers to save them provided they stand down. Krell convinces the High Council to spare the colony and takes on the distribution of the cure across the Empire. Trip remains on Enterprise to supervise the repairs, while Reed informs Harris that he will never work for Section 31 again.

93 Bound Enterprise is approached by Harrad-Sar, an Orion trader, and Archer negotiates a contract for Starfleet to mine magnacite on a planet in Orion territory. To seal the deal, Harrad-Sar makes Archer a gift of three slave girls, Navaar, D'Nesh and Maras. The girls soon create disorder among the crew: they seduce the men and distract them from their duties; while the women complain of headaches. Phlox determines that the girls exude powerful pheromones that are causing this. It seems that only Trip and T'Pol are immune due to their psychic bond. By the time Enterprise reaches the planet to survey for magnacite, the crew are delusional and under the control of the Orion girls. They are powerless to fight off Harrad-Sar's vessel and he attaches a tow cable to Enterprise. He intends to take Archer to the Syndicate and claim the bounty on his head. T'Pol and Trip manage to electrify the cable and overload Harrad-Sar's ship systems, using their phase pistols to stun Archer and Mayweather when they try to stop them. Phlox then treats the crew to immunise them from the pheromones.

T'Pol admits to Tucker that she wants him to return to Enterprise, and he confesses that he asked Captain Hernandez to reverse his transfer three days earlier.