Season One Earth astronaut
John Crichton is unexpectedly
hurled to an unknown part of the Milky Way galaxy via a
wormhole. He finds himself in the middle of an escape attempt by
Moya, a living spaceship, from the militaristic
Peacekeepers, who had been using her as a prison transport. In the chaos, Crichton's space capsule accidentally collides with a Peacekeeper fighter, which results in the death of its pilot. Crichton's ship and another Peacekeeper fighter are brought into Moya's hold. Although the escape is successful, the Peacekeeper Captain,
Bialar Crais, fixates on Crichton as the murderer of the pilot—his brother—and begins a campaign to chase Crichton down. The various crew have no common goal, each only wishing
to go home. Unfortunately, to evade Crais' pursuit, they have to travel into the Uncharted Territories, and thus have no idea how to get home. The crew also has little respect for Crichton, seeing him only as a "primitive hoo-man" who does not understand even the basic tenets of life in space. Various episodes explore the characters' backstories. Aeryn, the fighter pilot,
begins to learn that the Peacekeepers are not always as correct as she had believed.
Zhaan is forced to
bring up the dark side she had worked to suppress. D'Argo admits he was
framed for his wife's murder and has no idea where his child is. Rygel confronts
his former jail keeper and torturer. A new character joins the crew,
Chiana, a teenage thief on the run from her own repressive culture. And Moya herself
becomes pregnant after a Peacekeeper experiment is accidentally activated. Meanwhile, Crichton continues to research the wormhole that brought him here. He is forced to sell what little progress he has made to
an alien mechanic as payment for repairs on the Farscape module. He is also lured into a wormhole that seems to lead directly back to Earth, only to find
the entire situation is a construct created by mysterious aliens called the
Ancients, who are testing to see if Earth is suitable for colonization. Towards the end of the season,
Aeryn is injured and the crew is forced to
go to a Peacekeeper base to seek medical help. Crichton disguises himself as a Peacekeeper to gain access, but the base's commander,
Scorpius, instantly sees through the ruse and imprisons Crichton, calling Crais to come collect him. Under torture,
Crichton discovers that the Ancients placed specialized knowledge of wormholes in his subconscious mind—knowledge that Scorpius is particularly eager to access. The other Moya crew members launch a rescue attempt. Meanwhile, Moya gives birth to her baby, discovering that the child, named
Talyn, is a volatile hybrid warship designed by the Peacekeepers instead of the usual peaceful
Leviathan. Upon Crais' arrival, Scorpius takes over his command.
Crais defects to Moya to save himself, accepting along the way that Crichton had not meant to kill his brother. But this is only a cover to steal Talyn and escape on his own. Having grown much closer over the course of the season, the crew work together to escape Scorpius—a plan that ends with Crichton and D'Argo floating in space, running out of air.
Season Two The crew of Moya are now
on the run from Scorpius, who wants the wormhole knowledge locked in Crichton's brain for his own purposes. To avoid him the crew are forced into some
unwise decisions and alliances, which often result in wacky,
mind-altering hijinks for the crew. Moya encounters an independent
Sebacean colony (Sebaceans being the race from which Peacekeepers are drawn), where the heir to the throne has been genetically poisoned by her younger brother so that she cannot procreate with any Sebacean male, which would allow him to take the throne instead. Recognising Crichton as a possible substitute to ensure the continued independence of her world, the Empress insists he
marry the Princess, or else she will hand him over to Scorpius. Terrified of Scorpius after his experiences on the base, Crichton is
forced to agree. Aeryn, who has been growing attached to Crichton, finds herself jealous. Despite various plots by Peacekeepers and an agent of their enemies the Scarrans, the Moya crew manage to wheedle their way out once again, although the Princess is indeed left pregnant. Meanwhile, D'Argo and Chiana begin a relationship based mostly on sex, and Zhaan is tasked with protecting Moya by the Leviathian's creator-gods. Crichton
has a chance to kill Scorpius, but finds himself unable to do it, blocked by some unknown cause. That cause is revealed when Crichton is
kidnapped by Scarrans – during his torture on the base, Scorpius had implanted Crichton with a neural chip that contains a clone of his personality, designed to track down the wormhole knowledge and protect Crichton and Scorpius both until that knowledge is found. Crichton nicknames the clone
Harvey and it begins to manifest as hallucinations to him. The half-crazed mystic
Stark – whom Crichton had met while jailed at the base – returns with information about D'Argo's son,
Jothee. The boy is one of a lot of slaves, and they can rescue him by buying the entire lot. To afford to do that they will need to
rob a bank. The crew put a plan into action, which is complicated when Scorpius arrives. Scorpius has captured the slaves, but promises to give them Jothee if Crichton will turn himself in. Under intense pressure from the neural clone, Crichton does so. D'Argo is
reunited with his son, and the crew move into action to save Crichton. Even Crais and Talyn
return to assist. The rescue is successful, although Moya is severely damaged and Crichton is nearly insane from the effects of the neural clone. At the medical colony to fix them both,
the clone takes control of Crichton, seemingly killing Aeryn just as she admits her love for him. With Aeryn dead, Crichton wants the chip removed once and for all. At the same time, Scorpius catches up with them again, killing the doctor and announcing that the chip has completed its work and found the wormhole knowledge. He removes the chip and leaves Crichton incapacitated at the hospital.
Season Three Having survived Scorpius' attack, the doctor
saves Crichton by using biological material from a suitable donor – an alien called an Interon which may be a cousin species to humans. Scorpius fools Crais into thinking he is dead to cover his escape with the neural chip, and Zhaan revives Aeryn, but at the cost of her own life. Feeling guilty over the death of the Interon donor, Crichton has the donor's still living relative brought aboard – an arrogant scientist called
Jool. Investigating another wormhole, Moya
crashes into a ship belonging to a race called Pathfinders, experts in wormholes.
Zhaan sacrifices the last of her life to separate the ships, adding more guilt to Crichton's conscience. He also discovers that despite the chip's removal, the personality clone Harvey remains in his mind. Due to a
harrowing encounter with another escaped prisoner with a cloning device, Crichton ends up twinned – a duplicate created so that there are two Crichtons, both equal and original. Talyn is attacked by the new Peacekeeper Commando chasing the crew –
Xhalax Sun, Aeryn's mother. To escape her, Moya and Talyn starburst
in opposite directions, splitting the crew, with one Crichton on each ship. On Moya, tensions rise over D'Argo's
breakup with Chiana, Jool's grating personality, and Crichton's increasing obsession with wormholes. An
encounter with an alien Energy Rider also instils precognitive abilities in Chiana (or possibly only activates already present abilities). Meanwhile, Scorpius
tries to access the wormhole data, but finds that the chip now contains a neural clone of Crichton, who refuses to allow Scorpius access. On Talyn, Crais explains that Xhalax wants to recapture him as a renegade Peacekeeper, and to recapture Talyn as a powerful warship. After
a vicious battle, Aeryn allows Crais to kill her mother. Crichton discovers that the mechanic, Furlow, has
been working on the wormhole data he gave her in the first season, and intends to sell it to the Scarrans. With the help of the Ancients, Crichton unlocks the wormhole knowledge just enough to destroy the Scarran ship, but suffers radiation exposure and
dies in Aeryn's arms. When the two crews
finally reunite, Aeryn cannot face the remaining Crichton, and Talyn is
becoming increasingly violent and uncontrollable. Crichton resolves to destroy the wormhole information that Scorpius has by
pretending to help him and then crippling the project from within. In return for his help, Scorpius grants the Moya crew leniency for their crimes. But high-ranking Peacekeeper Commandant
Grayza interferes, claiming that the Moya crew's continued freedom is an embarrassment and Scorpius' own obsession with wormhole tech does not outweigh their criminal record. Crichton finally decides that the only way to end Scorpius' project is to
destroy the ship. Crais orders Talyn to starburst inside the ship, killing them both and destroying the entire Command Carrier. Believing they are finally free from pursuit, the crew buries Talyn's remains and
splits up to go their own ways. But at the last second, a strange
old woman formerly imprisoned on the Command Carrier informs Crichton that Aeryn is pregnant, and Moya is sucked into a wormhole, leaving Crichton once again alone in space.
Season Four Alone for months, Crichton has had
nothing to do but obsess over Aeryn and wormholes. He finally makes a breakthrough on the latter when he meets a supposed Leviathan specialist,
Sikozu, on the run from her employers. When Chiana and Rygel also return, they
go together to Arnessk, where Jool, D'Argo and the old woman – Noranti – have joined an Interon archaeological dig. They find artefacts that suggest a connection between humans, Sebaceans and Interons. Commandant Grayza interrupts, having taken Scorpius prisoner and "kills" him to show good faith to Crichton. Crichton wants nothing to do with her and
escapes. Crichton finds that Aeryn has made a deal with Scorpius to
let him on Moya after he saved her life. Crichton keeps Scorpius imprisoned but
remains paranoid that his former enemy is planning something. Despite Aeryn's desire to reconcile, he pushes her away, even going so far as to suppress his feelings with drugs. A Scarran agent
invades Moya, since the Scarrans and Peacekeepers are in an arms race to acquire Crichton's wormhole knowledge. Crichton is instead
kidnapped by an Ancient whom he nicknames
Einstein, who explains to him the catastrophic danger if wormhole tech falls into the wrong hands. Returning from that meeting, the entire Moya crew accidentally
ends up on Earth, providing humans with their first confirmed contact with extraterrestrials and alien technology. Crichton is finally home but finds that the world is
too paranoid and distrustful to accept his alien friends due to 9/11 and the fact that the US government only wants to monopolize alien tech and knowledge for global domination. He has also been so affected by his experiences that he cannot relax there – a situation not helped when an agent of Grayza attacks and kills several of Crichton's friends. He decides the only thing he can do is leave again but he succeeds in convincing his father to make alien tech and knowledge to be shared equally globally much to the dismay of the US government. The crew comes across a
secret meeting between Grayza and a
Scarran minister, at which Grayza sells out D'Argo's people in return for peace. In disrupting the meeting Aeryn is captured. Desperate to rescue her, Crichton promises to give Scorpius the wormhole tech in return for his help. They
infiltrate a Scarran base and rescue Aeryn but Scorpius is captured in the attempt. Crichton is happy to leave him there but the neural clone Harvey informs them that Scorpius already has the wormhole tech and may reveal it to the Scarrans under torture. The crew of Moya are forced to launch yet another attempt to either rescue or kill Scorpius. They
walk into another meeting at the Scarrans' most important base, Katratzi, claiming to want to sell the tech to the highest bidder. Instead they start a riot between the Scarrans' various servant races,
blow up the base using a nuclear bomb and escape again. The Scarrans launch an attack against Earth – partly in retaliation but also to secure a source of
Strelitzia plants. The plants are vital to a Scarran augmentation process and Crichton had inadvertently revealed to the Scarrans that they can be found on Earth. The peacekeepers promise to protect Earth in exchange for allegiance but Crichton disagrees since it means dragging humanity into perpetual war between two galactic powers. Crichton's only option to
save his home world is to destroy the wormhole that leads there, leaving him stranded in space forever. Before destroying the wormhole, he says goodbye to his father and reveals that he has put a recording on the Moon near the site of the first Moon landing, containing technological data necessary for humanity to reach the stars in the future and protect themselves against alien threat. That done, Scorpius returns to the Peacekeepers and the Moya crew go to the ocean planet Qujaga to recover. While there, Aeryn reveals that the pregnancy – formerly kept in stasis – has now been released and they are going to have a baby. Crichton proposes to her and she accepts. At the last second they are attacked by random aliens, who appear to kill them both.
The Peacekeeper Wars Thinking that Crichton is dead and the wormhole tech gone with him, Scorpius deliberately starts a war with the
Scarrans in the hope that the element of surprise will be on their side. The tactic is unsuccessful, and the Scarrans are on the verge of overwhelming the Peacekeepers. When the Peacekeeper Grand Chancellor considers surrender, Grayza kills him and takes over to make sure the war continues. On Qujaga the aliens, called
Eidolons, realise that killing Crichton and Aeryn was a mistake and reanimate them. Scorpius instantly realizes this and abandons the war to track him down, hoping to acquire the wormhole tech once and for all as the only way of stopping the Scarrans. Crichton again refuses. Meanwhile, the crew discover that the Eidolons are in fact a lost colony of the people of Arnessk, and have an innate ability to bring peace to others. If they can find more of their people, they will be able to stop the war. Moya, with Scorpius and Sikozu in tow, heads back to Arnessk, where the ancient people have been revived and are working with Jool. They agree to help, but Scarran
Emperor Staleek attacks, destroying the base and killing Jool. Staleek doesn't want peace – he wants victory. Only one Eidolon remains, who is able to transmit the ability to Stark, and the crew escape the Scarrans with the help of D'Argo's son Jothee. They return to Qujaga to find that the Peacekeeper-Scarran war has reached the planet. Crichton and the others must get through the battle to reach the remaining Eidolons on the planet and pass the techniques of peace to them, all while both sides are still after him for wormhole technology. Once there, Crichton and Aeryn are finally able to marry and Aeryn gives birth, but D'Argo is fatally wounded in the escape and dies offscreen. Realising that neither side will take no for an answer, Crichton returns to Einstein and convinces him to unlock the knowledge, which Crichton then uses to launch a wormhole weapon – a
black hole that will grow and grow until it destroys everything in the universe. Both Grayza and Staleek finally realise that this weapon is too dangerous for anyone to possess, and they agree to a ceasefire. Crichton is able to stop the black hole, but falls into a coma as a result. With the war finally over, the Eidolons help broker a peace treaty between the two sides, but Crichton is still in a coma. He is finally brought out of it when Aeryn places his new baby in his arms. The new family looks out onto the now peaceful galaxy, naming the baby D'Argo in honour of their friend, and promising the universe belongs to him. ==Characters==