When the Scarlet Witch of the Avengers and Rogue of the X-Men all disappear under mysterious circumstances, each team's search leads them to more questions than answers. When the X-Men appear to attack a high-security government installation, the Avengers must track down the mutants and learn the truth behind the abductions before it's too late.

Marvel's most popular hero joins forces with Marvel's most popular super-team in this all-new trilogy. Spider-Man joins forces with the X-Men team when a mysterious photograph leads to a shocking discovery at the Time Displacement Core. The heroes must make a perilous journey into the past to prevent the destruction of the present.

Piloting a shuttle through a deadly solar flare, Jean Grey saves the X-Men, but is possessed by one of the universe's most powerful forces - the Phoenix. As she adapts to her new powers, the mutant team launches an assault against the clandestine organization known as the Hellfire Club. Once inside, however, Jean is tricked by the villain Mastermind into betraying her teammates. She becomes first the Hellfire Club's Black Queen and then Dark Phoenix, as the power to destroy worlds bursts forth uncontrolled.

In a dark and dangerous future, the mutant-hunting machines known as the Sentinels rule America with an iron fist. Almost all mutants and superhumans have been exterminated. Only a handful of imprisoned mutants remain to fight against their oppressive robotic overseers! Now Kate Pryde, former X-Man, must travel back in time and warn her present-day teammates of the coming danger - and hopefully prevent this horrible future from ever taking place!

Cyclops and Emma Frost re-form the team with the express purpose of "astonishing" the world. But when breaking news regarding the mutant gene unexpectedly hits the airwaves, will it derail their new plans before they even get started? As demand for the "mutant cure" reaches near-riot levels, the X-Men go head-to-head with the enigmatic Ord, with an unexpected ally - and some unexpected adversaries - tipping the scales!