A war is brewing between those with special powers ("mutants") and the rest of humanity -- and the only ones who can save the humans from certain destruction are a special group of mutants - the "X-Men." (Based on the comic series).

The X-Men must decide whether or not to terminate Jean Grey whose mental barriers erode and thereby threaten the world.

Emma Frost's erratic behavior has the X-Men in a downward spiral. An unlikely union may be the final straw. And, the new Hellfire Club finally makes its move. Plus, the X-Man destined to destroy the Breakworld is revealed.

Cyclops, studying as part of Professor Charles Xavier's X-Men, struggles with his abilities and embarks on his first tasks.

Describes the young Magneto, Erik Magnus, and his efforts to build an army of mutants.

The time-displaced young X-Men continue to adjust to a present day that's simultaneously more awe-inspiring and more disturbing than any future the young heroes had ever imagined for themselves. As Jean Grey pushes her powers to the limit, shaking her and the rest of the X-Men to the core, one of the young X-Men breaks rank - and leaves to join the adult Cyclops and his revolutionary crew! And when Mastermind targets the young Jean, will history repeat...