Episode 1: Out of the Past (1)
Wolverine's former love, a Japanese woman named Yuriko, lures Wolverine and the X-Men into the Morlocks' tunnels. She hopes to make a stunning alien discovery. They discover a ship, and Wolverine opens it.
Episode 2: Out of the Past (2)
Yuriko's alien discovery — a Shi'ar vessel — turns out to be a prison cell containing a voracious, gaseous prisoner, the M'Kraan Spirit Drinker. It immediately sucks life out of Yuriko and her cohorts, the Reavers. Soon the X-Men discover that electricity makes the alien explode and use electricity to defeat the alien.
Episode 3: The Phoenix Saga (1): Sacrifice
Shi'ar emissary Erik the Red takes over the Eagle One space station. The X-Men go to the space station to stop Erik the Red from killing the astronauts. While returning, they collide with an energy wave. Jean pilots the shuttle while the others sit in a chamber that shields them from the radiation.
Episode 4: The Phoenix Saga (2): The Dark Shroud
Jean Grey's psycho-kinetic shield fails. She is possessed by the Phoenix and cannot remember her ordeal. Meanwhile, Xavier goes to Muir Island to recuperate; an alien named Lilandra Neramani comes to assist in the M'Kraan matter, but Juggernaut and Black Tom Cassidy kidnap her.
Episode 5: The Phoenix Saga (3): Cry of the Banshee
The X-Men and Banshee go to save Lilandra. Here they are met by Gladiator. They have a hard time defeating him, but are aided by Jean Gray when she becomes the Phoenix.
Episode 6: The Phoenix Saga (4): The Starjammers
Jean Grey, using the Phoenix's powers, transports all the X-Men to Lilandra's ship where the Empress has hidden the M'Kraan Crystal. Starjammers attack and steal the M'Kraan Crystal from the X-Men. The Starjammers want to trade it to D'Ken, so that they will get close enough to kill him, but they are double-crossed. D'Ken unleashes the Crystal's power and gains new powers.
Episode 7: The Phoenix Saga (5): Child of Light
Shi'ar Emperor D'Ken's rise to power via the M'Kraan Crystal is causing a universal implosion. The X-Men, Imperial Guard, and Starjammers find themselves overpowered and unable to stop it. Jean Grey must unleash her destiny as the host of the Phoenix, even at a most personal cost.
Episode 8: No Mutant Is An Island (original)
Cyclops, still in mourning after Jean Grey's "death", quits the X-Men and returns to the orphanage he grew up in and encounters his friend Sarah. She tells him that a wealthy man has decided to adopt all the mutant children, especially Rusty; his true intentions are to make them his army to kill all humans in order to create a world where mutants are accepted. Cyclops must stop him and save the mutant children. Cyclops returns to the mansion, and he and the X-Men discover that Jean Grey has not perished after all.
Episode 9: Savage Land, Strange Heart (1)
Sauron kidnaps Storm to the Savage Land in order to feed from her mutant energy. Separated from the rest of the X-Men, Storm is encouraged by Sauron to free her inner tempest of energy, awakening Garokk.
Episode 10: Savage Land, Strange Heart (2)
Garokk fuses with the island's volcano and the surging planetary force below it. Realizing his mistake, Sauron absorbs Garokk's energy and becomes as strong as Garokk. Sauron defeats Garokk, and the X-Men return home.
Episode 11: Obsession
Archangel has become obsessed with destroying Apocalypse, who he blames for ruining his life. Beast finds an alternative to defeating Apocalypse. The X-Men trap Apocalypse in a force field, create a pod around it, and jettison it into the space; they then return to the X-Mansion.
Episode 12: Dark Phoenix (1): Dazzled
The Phoenix continues to inhabit Jean's body, brazenly taking over at will. When the Inner Circle Club find about the Phoenix's power, they use Jason Wyngarde to create a new history in the mind of the confused Jean/Phoenix. Wyngarde creates a passionate romance between himself and her. When the X-Men come to rescue Jean, they find her fighting alongside Wyngarde.
Episode 13: The Dark Phoenix (2): The Inner Circle
As Professor X and Emma Frost battle for psychic control of Jean, the Inner Circle members quarrel over how to dispose of their prisoners, the X-Men. Phoenix sees through the deception and escapes, but says "You made me do evil, and now I thirst for more."
Episode 14: The Dark Phoenix (3): The Dark Phoenix
When the X-Men confront Phoenix and ask it to give up Jean's body, Phoenix vows to destroy the team. To re-energize, she flies up through the D'Bari Star System, passing a very surprised Shi'ar Star Cruiser crew. As they watch in horror, she feeds upon and destroys an entire star system. To defend space life as they know it, the Shi'ar empress Lilandra decrees Phoenix/Jean Gray must die.
Episode 15: The Dark Phoenix (4): The Fate of the Phoenix
The X-Men battle Lilandra's Imperial Guards for custody of Phoenix/Jean Grey. When Phoenix falls in battle, Xavier startles everyone by commanding the X-Men to stop the now-vulnerable Phoenix. In the end, Phoenix comes to her senses, realizes she's done wrong, and leaves Jeans' Body.
Episode 16: Cold Comfort
Former X-Man Bobby 'Iceman' Drake is caught breaking into a top-secret government installation. The X-Men free him and take him to Xavier, who is sad that his former favorite pupil apparently has gone bad. Iceman broke in because his house was trashed and Lorna Dane was kidnapped. Later, he again breaks into the compound and the X-Men follow. When they get there it turns out that the government installation was a training ground for the X-Factor. Lorna Dane faked her kidnapping to join the X-Factor and start a new life.
Episode 17: Orphan's End
Cyclops discovers that Corsair may be his father. Corsair is on the run from Shi'Ar authorities, who demand that Cyclops turn him over to them. It later comes to light that the Shi'Ar police officers are corrupt and are attempting to kill a witness under Corsair's protection. The X-Men defeat the corrupt Shi'Ar officers. Cyclops invites Corsair to stay for a while, hoping to clear things up, and Corsair accepts.
Episode 18: Juggernaut Returns
Juggernaut's life is at risk when someone else uncovers the Ruby of Cyttorak and claims the powers of Juggernaut for himself, going on a crime spree. Cyclops and Wolverine find the new Juggernaut and intervene. He drops the Ruby and Wolverine and Cyclops escape with it. Professor X gives the Ruby back to his step-brother, restoring the original Juggernaut. He throws the Ruby into space and leaves the X-Men without a fight.
Episode 19: Nightcrawler
Gambit, Rogue, and Wolverine take a ski trip in Germany. While Gambit and Rogue seem to be enjoying themselves, Wolverine is restless, and longs for some action. When he hears reports of a demon hiding in a local monastery, his investigation reveals not a demon, but a mutant, Nightcrawler, whose devilish appearance is in stark contrast to his peaceful and deeply philosophical nature. Later the townsfolk attack and burn the monastery. The X-Men convince the townsfolk not to fear what they do not understand, Wolverine, too, learns something about the nature of faith.
Episode 20: Weapon X, Lies, & Videotape
A cryptic postcard unleashes a flood of maddening and painful memories in Wolverine that threaten to drive him insane. To keep his mind from being torn apart, Wolverine and Beast travel to the one location that may hold the answers to his hidden past: the ruins of the top-secret Weapon X lab where Wolverine's bones were laced with Adamantium. There he encounters other former 'test subjects' — Sabretooth, Maverick and Silver Fox — who are suffering similar mental breakdowns. Later they find out that many of their memories were implanted, and their true memories are destroyed with the lab.
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