Episode #1 - Out of the Past, Part I
Wolverine's former lover Yuriko returns in the form of Lady Deathstrike, seeking revenge for her father’s death. Accompanied by a group of cyborgs, she lures the X-Men into the Morlock tunnels to unlock an alien vessel.
Episode #2 - Out of the Past, Part II
An uneasy alliance is formed as the X-Men and Yuriko struggle to stop The Spirit Drinker which has been released from the prison cell and has sucked the life force from Jubilee!
Episode #3 - Phoenix Saga, Part I: Sacrifice
After having visions in his dreams, Professor Xavier sends the X-Men to the Eagle One Space Station, where they find themselves in the middle of an interstellar war, which threatens the Earth’s safety.
Episode #4 - Phoenix Saga, Part II: The Dark Shroud
The X-Men barely survive the trip back to Earth, with pilot Jean Grey rescued by the appearance of the mysterious Phoenix. While recovering, the X-Men are alarmed to see a dark side of Xavier as he attacks them!
Episode #5 - The Phoenix Saga Part Three, Cry Of The Banshee
The X-Men head off to Muir Island to rescue Princess Lilandra who has been kidnapped by Juggernaut and Black Tom Cassidy, unsure if she even exists or is a figment of Professor Xavier’s imagination.
Episode #6 - The Phoenix Saga Part Four, Starjammers
Phoenix transports the X-Men to Lilandra’s ship where they battle to protect the M’kraan Crystal from D’ken and save the universe. Cyclops is kidnapped by the space pirates who are after the same crystal.
Episode #7 - The Phoenix Saga Part Five, Child of Light
The universe is at risk of imploding with the crystal now in D’ken’s possession. Briefly helped by Spider-Man, the X-Men struggle to save people from disasters and the fate of the universe lies with Jean Grey.
Episode #8 - No Mutant is an Island
Still grieving the loss of his beloved Jean Grey, Cyclops quits the X-Men to return to the orphanage he grew up in. Things are not what they seem: mutant children are being trained as human killers and could Jean Grey still be alive?
Episode #9 - Obsession
Itinerant X-Man Archangel is desperate for revenge against his saviour Apocalypse and enlists the help of Beast in his murderous quest, but the X-Men’s cunning plan to stop Apocalypse is unravelled by Archangel’s recklessness.
Episode #10 - Longshot
The manipulative media tyrant Mojo lures his rebel slave Longshot and the X-Men into a deadly TV contest. Jubilee is the unfortunate prize and the live broadcast ensures top ratings for the greedy showman.
Episode #11 - Cold Comfort
Former X-Man Bobby ‘Iceman’ Drake returns and clashes with Xavier after breaking into a government compound. His explanation for turning evil results in a confrontation between the X-Men and another mutant team, the X-Factor.
Episode #12 - Savage Land, Strange Heart, Part I
Storm is kidnapped by half-human, half-pterodactyl, Sauron, and taken back to the Savage Land, where she is drained of her mutant energies. The X-Men arrive to fight off dinosaurs, Sauron, the godlike Garokk and . . . Storm!
Episode #13 - Savage Land, Strange Heart, Part II
The X-Men and the island natives battle to prevent volcanic destruction as Storm unleashes her elemental powers on the Savage Land and Garokk is rejuvenated by the surging planetary force.
Episode #14 - The Dark Phoenix, Part I: Dazzled
Jean Grey’s body is still infused with the Phoenix and, as a mutant singer, Dazzler, flirts with Cyclops, Jean is tricked into joining the Inner Circle, leaving the X-Men to prevent abuse of the Phoenix Force.
Episode #15 - The Dark Phoenix, Part II: The Inner Circle
With Jean Grey as their new Black Queen, the Inner Circle plan to dispose of the X-Men. A war of psychic attrition develops between the X-Men, the Inner Circle and Phoenix, with Jean caught in the middle.
Episode #16 - The Dark Phoenix, Part III: The Dark Phoenix
Struggling to free Jean’s body from Phoenix, the X-Men are confronted by the hostility of the Dark Phoenix, who destroys an entire star system. Shi’ar ruler Lilandra orders the death of Phoenix/Jean Grey. Can the X-Men stop the Dark Phoenix without harming Jean?
Episode #17 - The Dark Phoenix, Part IV: The Fate of the Phoenix
After a battle with the Shi’ar Imperial Guard to save Jean Grey, Professor Xavier astonishes the X-Men by commanding a strike on Phoenix, threatening Jean’s mortal safety.
Episode #18 - Orphan’s End
Corsair, leader of the space pirates Starjammers and father of Cyclops, arrives on Earth on the run from the Shi’ar. Can Cyclops help prove the innocence of a man who abandoned him as a child?
Episode #19 - The Juggernaut Returns
The X-Men come to the rescue of Professor Xavier’s step-brother and arch-enemy, the unstoppable Juggernaut, after his powers acquired from an ancient ruby are stolen.
Episode #20 - A Deal with the Devil
Soviet super-soldier Omega Red enlists the help of sworn enemies Wolverine and Storm to salvage a toxic nuclear submarine. His deadly intentions are revealed in the darkest depths of the oceans.
Episode #21 - Sanctuary, Part I
To feed his hatred of humankind, the powerful and dangerous mutant Magneto creates an orbiting base for mutants, Asteroid M, which results in the X-Men becoming entangled in a plot to assassinate Magneto.
Episode #22 - Sanctuary, Part II
With Magneto out of the way, upstart Fabien Cortez takes control of Asteroid M and launches a nuclear attack on Earth. It’s down to the X-Men to stop Cortez and prevent a world wipe-out.
Episode #23 - Xavier Remembers
After suffering concussion, Professor Xavier’s mind is possessed by the malevolent spirit Shadow King and it’s proving a real headache for the X-Men to bring him back from the Astral Plane.
Episode #24 - Courage
Shape shifter Morph returns home to re-join the X-Men but the welcome party is disrupted by Master Mold and the terrifying Sentinels, a powerful army of mutant-hunting robots, who nearly killed Morph on their last encounter.
Episode #25 - Secrets, Not Long Buried
As Cyclops heads to a desert town to visit an old friend, his plane crashes. As a result, he loses his mutant powers and is hunted down by a gold-digging anti-human mutant group, led by the maniacal Solarr.