On top of being an eccentric genius, a billionaire, a playboy and a philanthropist, Tony Stark (Robert Downey Jr.) is also the armored super hero known as Iron Man. Fresh off of defeating enemies the world over, Stark reluctantly agreed to serve as a consultant to Nick Fury’s (Samuel L. Jackson) top-secret peacekeeping and intelligence agency known as S.H.I.E.L.D. Now, with a global crisis on the horizon and the fate of the world in the balance, Stark must again power up his Iron Man armor to save the world, and become a full-fledged member of The Avengers.
After a gamma radiation experiment went awry, mild-mannered scientist Dr. Bruce Banner (Mark Ruffalo) found himself with a peculiar condition. When angered or provoked, he would transform into the uncontrollable, green-skinned monster known as the Hulk. Now, fearful of the damage that the Hulk could inflict, Dr. Banner chooses to live a discreet life in remote parts of the world, working to cure the sick and help the poor while trying to elude those who would take advantage of his ability to change into the enormous, green menace. When a mounting threat calls for Banner’s specialized scientific expertise, S.H.I.E.L.D. Director Nick Fury recruits him, knowing full well that the incredible strength of Banner’s alter ego, the Hulk, would be an asset to The Avengers.