When Scott and Kurt use their powers to save several people from a car crash, the question of how much they're willing to ignore to keep their powers secret comes up. Professor X maintains that the world is not ready to know about them, however the other mutants, now without Mystique's guidance, has other ideas...

Jean's abilities start growing in sudden bursts. At first she tries to ignore it, but with each burst she has increasing trouble regaining control. Meanwhile the school gets a new science/phys. ed. teacher.

After being grounded for reckless behavior during a training mission, Tabitha doesn't need her father showing asking her to steal money for ""her mother""...

A malfunction in Juggernaut's stasis field leaves the X-Men without adult supervision. Decidnig to held ap party, they ditch Scott and Jean in the wilderness. However, things soon get out of control, when one of the guests gives himself access to Cerebro.

The kids get worried when the normally cool and collected teacher Hank McCoy starts having fits of animal rage.

Scott becomes lost at sea when trying to find his brother, who was swept out by freak wave while surfing.

Xavier starts worrying about the existence of mutants becoming public knowledge when the media starts reporting multiple sightings of a man with angel wings. With most of the X-men on Christmas leave, and Cerebro down for repairs, Scott and Rogue are left having to track the man down themselves.

An African witch-doctor comes to the institute to steal Storm's powers while she is faced with the decision to send Evan back to his parents.

Lance comes to the mansion, wanting to join the X-Men. Unfortunately he has a hard time fitting in, and it doesn't get any easier when he gets the blame for some of the other students' nightly joyrides in the various X-Men vehicles.

When Jean and Amara feel like the boys think they are stronger than the girls are, Tabitha decides that they should form a girl's crime fighting club. After getting Kitty and Rogue to join, they begin to fight crime at night as the Bayville Sirens, while the rest of the town, as well as the rest of the X-men, try to figure out who they are.

Magneto steals the remaints of the top secret "Rebirth" project, a project Wolverine helped shut down all the way back in World War II.

Jean has nightmares about huge circus clowns, then is controlled by the master of that circus, with Nightcrawler, Kitty, and Spyke controlled also.

Forge is working on a device that will let Kurt teleport around the world when they realise when Kurt teleports, he passes through a beast infested demension. After a close shave, Kurt vows not to work on the project anymore, but at the school dance, Kurt's only partially closed demension doors let the beasts into the school.

While Beast is taking Kitty, Bobby, Evan, and two other new recruits on a camping trip, a few hunters decide that Beast is really a Big Foot, and they plan to trap him.

Mystique breaks the Scarlet Witch out of an assylum (crazy house) and brings her to Brotherhood House. Mystique kicks Tabitha out of the house. Quicksilver meets up with his sister....the scarlet witch.....The X-Men get defeted by the Brotherhood for the first time.Lance shows more feelings for Kitty.

Wolverine suddenly vanishes, as the Brotherhood members team up with the X-men to defeat Magneto. They take off to fight him, leaving behind the new recruits. As soon as the ships take off, the institute goes into self-destruct mode. Before it can close off the doors, Amara gets out and is narrowly saved by Tabitha from the institute's weapons. They find Scott, who stayed behind because he felt too angry to stay with the team, and enter the mansion to help the others out. But as they reach the control room, the clock is counting down from 10 seconds....

The Brotherhood/X-men arrive where Magneto is with his new allies, but Quicksilver suddenly reveals he is part of Magneto's team. The others begin to battle the allies, but without warning, Magneto caves in the ground, and a mega-robot sentinel is released. The government agents with the sentinel trap a few members of the team, and the remaining retreat back to the destructed institute. Scott and the other students explain how they escaped then Scott suddenly accuses the Professor of setting it up. Professor X suddenly morphs into Mystique, shocking them all, stating that "Things are about to get much worse...."