Marvel makes cinematic history again with the most unexpected team-up in the universe! Joining forces for the first time ever, Hulk's brute strength and Tony Stark's high-tech brainpower come together to face off against the ultimate enemy. When "Zzzax", a seemingly invincible, energy-devouring monster, threatens to destroy the planet, Marvel's unlikeliest pairing of Avengers is mankind's only hope. Alone, neither can defeat the awesome power of Zzzax. As a duo, they just might have a chance – if they can find a way to work together without smashing heads before time runs out!