The Invincible Iron Man and the Incredible Hulk join forces to save the Earth from Zzzax - a being of pure electricity created from a Stark Arc Reactor with Hulk's Gamma Energy. But first, the super ones will have to get through snarling Wendigos, deadly robots and the scaly powerhouse, Abomination. Can two of Marvel's superheroes find a way to work together without crushing each other before time runs out?