The X-Men's advanced training simulator, designed to generate realistic scenarios for honing their mutant abilities, falls under sabotage when a malicious virus corrupts its systems and triggers an unpredictable cascade of lethal simulations. Investigation reveals that Magneto, the powerful mutant antagonist and head of the Brotherhood, planted the digital weapon to cripple the team from within. Trapped in increasingly perilous environments spawned by the compromised machinery, the X-Men must locate and neutralize the virus before the Danger Room's malfunctioning systems claim their lives.