Night of the Sentinels Part 1
Season 1, Episode 1 TV-Y7
CC
SD
Jubilee is attacked by robots called Sentinels at a local mall but she is saved by Storm and Rogue, and taken to the X-Mansion for her safety. The X-Men discover that the group running the Mutant Registration Program intends to track and eliminate mutants. Later, the X-Men find the Sentinel base and infiltrate the base to destroy the files on mutants. The episode ends in a cliffhanger when Storm opens the door to a room where many armed soldiers are hiding, waiting to ambush the X-Men.
Night of the Sentinels Pt. 2
Season 1, Episode 2 TV-Y7
CC
SD
Wolverine smells the soldiers' gun oil and quickly closes the door before the soldier’s fire. Storm sweeps the guards away with her wind power. After destroying the files on mutants, the X-Men escape to the Blackbird, but are stopped by the Sentinels. During the fight with the Sentinels, Morph is shot and presumed dead. While Beast gets blasted against the fence and gets electrocuted and captured, the rest retreat to the Blackbird on Cyclops’ command. Jubilee decides that it is best to stay at the X-Mansion.
Enter Magneto
Season 1, Episode 3 TV-Y7
CC
SD
After Beast's trial, Sabretooth demands that Beast be set free, prompting the guards to shoot and injure Sabretooth. Cyclops aids Sabretooth and brings him to the Mansions' infirmary. Later, Magneto attacks a military missile facility. As the X-Men arrive, Magneto is preparing to launch nuclear missiles in order to ensure a war between mutants and humans. Cyclops, Storm, and Wolverine face off with Magneto, but are unable to stop him. Later Storm uses her wind and lightning to cause the missiles to short-circuit, deactivating them and drop them into the water. Having prevented a nuclear war, the X-Men return home to the mansion having learned the full power of Magneto.
Deadly Reunions
Season 1, Episode 4 TV-Y7
CC
SD
Magneto destroys a chemical plant in order to attract Professor X. Cyclops, Rogue, Storm, and Professor X proceed to the chemical plant, while Jubilee is left to guard Sabretooth. Professor X enters the chemical plant to confront Magneto. Just as Magneto appears to beat Professor X, Professor X telepathically forces Magneto to recall his younger years. Magneto retreats in panic. Back at the X-Mansion Sabretooth growls in disgust at the senator on television and Jubilee notices a problem with his wrist bindings. Jubilee loosens the restraints, and Sabretooth captures Jubilee, but Wolverine leaps from the shadows and attacks him. Their battle is interrupted with the return of Professor X and the other X-Men. This distraction provides Sabretooth an opportunity for escape, slashing deep wounds in Wolverine's chest.
Captive Hearts
Season 1, Episode 5 TV-Y7
CC
SD
A group of mutants called Morlocks capture Jean and Cyclops when they go out. The Morlocks’ leader Callisto kidnapped Cyclops so that he would rule the Morlocks beside her. Jean uses her telepathic powers and tells the Professor that they have been captured. Wolverine, Gambit, Rogue, and Storm go to search for them. When the X-Men find Jean and Cyclops, Storm challenges Callisto for leadership of the Morlocks to save Cyclops and Jean. Callisto has no choice but to accept the challenge. After a brief fight, Storm defeats Callisto and becomes the new Morlocks' leader, but having saved Jean and Cyclops, she makes Callisto the leader in her absence.
Cold Vengeance
Season 1, Episode 6 TV-Y7
CC
SD
Wolverine flees to Canada to seek solitude in the Canadian wilderness. He finds peace among a group of Baffin Island Inuit, only to discover Sabertooth has been stalking him and has taken the people of the village captive, and plans to kill them all. Wolverine is able to defeat Sabertooth and rescue the villagers. Back at the X-Mansion, Gambit tells the X-Men he heard the people at Genosha welcome mutants and he wants the team to vacation there. Professor Xavier sends Storm, Gambit, and Jubilee to Genosha as tourists. While in Genosha, Storm, Gambit and Jubilee are attacked and captured by a Sentinel.
Slave Island
Season 1, Episode 7 TV-Y7
CC
SD
Gambit, Storm, Jubilee and a host of other mutants are made to work as slaves in Genosha in order to complete a dam which will power a Sentinel factory. Special collars on mutants' necks prevent them from using their powers, but Gambit manages to escape. During his escape, Gambit finds Cable who is looking for the one responsible for enslaving the mutants. Cable gives Gambit a key to unlock his collar before attacking the Sentinel factory. Meanwhile, Gambit frees the other Mutants. The Mutants begin fighting with the guards and Sentinels before fleeing. Storm uses her powers to bring down the dam, causing a flood to destroy the entire Sentinel factory. The X-Men then return home to a destroyed X-Mansion.
The Cure
Season 1, Episode 8 TV-Y7
CC
SD
A doctor at the Muir Island Mutant Research Center claims to have found a cure for the mutant gene. Rogue travels to the island seeking the "cure". Rogue visits Dr. Adler and tells him how she is considering the treatment. Dr. Adler sends her on her way and Apocalypse appears. Dr. Adler reverts to Mystique and they discuss Rogue's powers. Later Cable attacks Dr. Adler but the X-Men defeat them, and Rogue changes her mind about the treatment and leaves. Near the end, Warren (Angel) comes for the treatment and goes into Dr. Adler's lab. Later, Mystique finds Apocalypse and tells him of Warren, and he replies that he is planning on destroying the world.
Come the Apocalypse
Season 1, Episode 9 TV-Y7
CC
SD
The immortal mutant Apocalypse turns mutants who journeyed to Muir Island seeking the fictitious cure into the Horsemen – Famine, Pestilence, War, and Death. The Horsemen start destroying everything across the planet. The X-Men arrive and battle the Horsemen. Rogue eventually grabs Archangel and absorbs his memory, sucking Apocalypse's power out of him. Archangel, appalled at what he has become, blasts the other Horsemen away. Apocalypse flees in a spaceship, and the diversion allows the other Horsemen to escape also.
The Unstoppable Juggernaut
Season 1, Episode 10 TV-Y7
CC
SD
After the X-Men find the X-Mansion destroyed, Wolverine goes looking for the suspect, followed by Storm, Rogue and Jubilee. Later Jubilee find a mutant made out of pure steel. Thinking he is the one responsible for trashing the school, Jubilee goes after him, but Wolverine says he was not the one who destroyed the mansion because he smelled different. Jubilee and Wolverine find Juggernaut robbing a bank and try to apprehend him, but Juggernaut is too strong. Soon the other X-Men arrive at the scene. Jean explains that she cannot mentally attack Juggernaut as long as his helmet is on. Cyclops thinks they can defeat him, as long as they work as a team. The plan works, thanks to the combined attacks of the X-Men and the strength of Colossus. Rogue tries to use her power to hurt Juggernaut but only manages to absorb some of his powers, as Juggernaut has almost infinite strength(no known upper-limit) thus getting massive jolt in return but in process reading his thoughts revealing why he destroyed the mansion: Xavier is his half brother and he wanted to take revenge because his parents treated Xavier better than him. Wolverine releases his helmet and Jean wipes his mind clean. At end of the episode the X-Men start rebuilding the Mansion.
Days Of Future Past Part 1
Season 1, Episode 11 TV-Y7
CC
SD
A mutant named Bishop travels through time from 2055 AD to the present in order to stop a member of the X-Men from assassinating someone. When he comes to the present he can not remember who the assassin is. Later he turns to the X-Men for help. The episode ends on a cliffhanger ending where it's revealed that Gambit is the suspect.
Days Of Future Past Part 2
Season 1, Episode 12 TV-Y7
CC
SD
As Bishop shoots Gambit, the X-Men stop him. Later they go to Washington, where the Brotherhood of Mutants plan to assassinate Senator Robert Kelly. Mystique poses as Gambit and tries to kill Kelly, but the real Gambit saves the Senator. Then Bishop goes back to his time. Later, when Professor X goes to see Senator Kelly, he finds that Magneto has kidnapped the Senator leading to another cliffhanger ending.
The Final Decision
Season 1, Episode 13 TV-Y7
CC
SD
Magneto brings Senator Kelly to a sunken ship to kill him, so that mutants and humans would go to war. Sentinels attack Magneto and take Senator Kelly. When the X-Men finally find where Magneto is, the Sentinels are already gone with the senator. The Sentinels take Senator Kelly to Master Mold. Master Mold wants to replace all the world leaders' brains with computers, so that Sentinels could control the world. The X-Men go to the Sentinels' base and save the Senator. Kelly realizes that some Mutants can be good. Cyclops and Jean become engaged. And there is a hint that we will soon meet a character named Sinister. We see a quick clip of Ghost Rider and Gambit's former love interest Bella Donna in this episode for the first time as one of the characters seen in Gambit's mind when Prof. Xavier tries to locate information on Henry Gyrich, one of the men who heads the Sentinel production project.