The fate of the entire Marvel Universe hangs in the balance as Earth's mightiest heroes face their greatest challenge! Summoned across the stars by the mysterious and unbelievably powerful Beyonder, the Avengers, Spider-Man, the Fantastic Four, and the X-Men are set against their deadliest foes on the mysterious planet known as Battleworld - with the winner promised the ultimate prize. But as battle lines are drawn, new alliances are forged, and old enemies clash, one among them is not willing to settle for anything less than godhood.

Iron Man and Captain America are two core members of the Avengers, the world's greatest superhero team. But when a tragic battle blows a hole in the city of Stamford, killing hundreds of people, the US government demands that all superheroes unmask and register their powers. To Tony Stark - Iron Man - it's a regrettable but necessary step. To Captain America, it's an unbearable assault on civil liberties.

What drives the Man Without Fear? Matt Murdock was raised by a single father, an over-the-hill prizefighter with one last chance to make good - a chance that cost him his life. Taunted and tormented by other children, Matt's life was irrevocably altered after he was blinded by radioactive materials while saving the life of an old man. The payoff? An unbreakable will and a keen intelligence, helping focus the super-senses with which he was blessed during the accident. His story is one of love, pain, disappointment, and strength.

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!

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!