Several months have passed since The X-Men defeated Magneto and imprisoned him in a seemingly impregnable plastic chamber. One day, a mutant by the name of Nightcrawler infiltrates the White House and attempts to assassinate the president, setting off a chain reaction of anti-mutant measures by the government. Meanwhile, Logan is trying to discover his past. As scientist named William Stryker discovers Professor X s secret school and Cerebro, Magneto s partner, Mystique, is planning to break her leader out of prison. But when Professor X s school is attacked by Stryker s forces, Logan, Rogue, Iceman and a few are lucky to escape. Those who remain meet in Boston, where they form an uneasy alliance with Magneto to stop Stryker and rescue Professor X.