While the X-Men are at a summer camp, learning survival training, Mystique releases Cain Marko - the unstoppable Juggernaut - in hopes of getting his help in obtaining Xavier's mutant location system.

As mysterious metal pods appear, picking up the mutants one at a time, Cerebro detects a new mutant in Hawaii: Alex Summers - Scott's believed to be deceased brother.

Magneto reveals the his plans for the winners of his challenge - to fully unlock their powers with a machine he has built. Back at the mansion, those left behind regroup, and decide to pay Magneto a little visit.

Scott and Rogue end up on a geology club field trip together. Scott tries to be friendly to her, but it turns out Mystique has other plans...

The battle against Apocalypse rages as X-Men, the Brotherhood, and Acolytes join forces to stop him from turning all humans into mutants.

Rogue's nightmares seem to show images from Kurt's past, but in them he's far too young to remember. So where did they come from?

After being kept in the dark about her powers for years, a young female mutant touches a fellow student and absorbs his strength, his memories - his life. Afraid and confused, and unable to differentiate her memories from the absorbed ones she runs away - straight in to the hands of Mystique.

Xavier finds Apocalypse in Egypt, and Apocalypse unleashes four horsemen, who battle the X-Men.

Mystique sees an opportunity to get a spy in Xavier's institute when the morally shady Todd Tolanski starts exhibiting mutant powers. Kurt Wagner, Xavier's latest recruit, arrives and tries to familiarize himself with his new life as part of the X-Men.

15-year-old Kitty Pryde wakes up one day and finds herself able to walk though objects. She tries to ignore it, but finds that hard when she's approached by Jean Grey and a mutant trouble maker, who both say they know what she's going through and want to help her. Meanwhile Wolverine's old nemesis, Sabertooth, arrives in town - looking for trouble.

As an extra credit project, Evan is given a camera to record the ""current events"" in his life. Though most of them aren't keen on being caught on tape, Sabertooth is most definitively interested in the result.

A news report from the Canadian mountains triggers something deep inside Wolverine, and he starts having berserk fits. To find out why, he takes the Blackbird to the site, not knowing that Kitty and Kurt are sitting in the back.

Jean's telepathy changes, arriving in surges she can't control; and Hank McCoy joins the faculty as a science-and-gym teacher.

The X-Men pursue Apocalypse in Mexico, hoping to find and overcome him before Magneto finds him.

Nightcrawler has a crush on a new student. The wild girl is grounded for breaking the rules, but things get worse when her father arrives and asks that she help him in a bank robbery.

The young X-Men are left alone in the mansion when the adults respond to a jailbreak, and they throw a party that doesn't end well.

The serum Hank McCoy uses to control his mutation no longer works, and his students are afraid of his angry outbursts.

Havok is swept out to sea while surfing in Hawaii, and Scott saves him, but they both end up stranded and have to work together to survive.

The X-Men help Storm when her abilities are threatened by a visiting African witch doctor who attempts to steal her powers.

Avalanche wants to join the Institute, but has trouble being accepted by the others, especially after he's accused of taking joyrides on the X-vehicles at night.

Xavier suspects that a flying "angel" seen above New York is a mutant, and he sends Cyclops and Rogue to find him before Magneto does.

Jean is possessed by a mutant with telepathic powers, which he uses to control the students and have them help him in his plot to release the imprisoned Apocalypse, a mutant who wishes to enslave the human race.

Forge invents a teleporter, and Nightcrawler uses it to travel large distances, but inadvertently opens a portal that allows strange creatures to follow him back to the school.

Beast is mistaken for Bigfoot by hunters while he's on a camping trip with the students.

The women form a team of crime fighters after Jean and Amara are teased for having weaker powers, and they call themselves the Bayville Sirens.