Discover the stories behind Marvel's most legendary Super Hero team! Iron Man: Billionaire inventor Tony Stark turns himself into a weapon when he is captured by enemy forces. Hulk: Bruce Banner is blasted with gamma radiation that transforms him into a powerful green monster. Thor: When his pride becomes too great, the warrior Thor is sent to Earth to learn how to be a true hero. The Avengers: When evil threatens, Earth's mightiest heroes join forces to defeat it.