A sudden and powerful evil force poses a deadly threat to the earth, and no superhero can resist it alone. SHIELD, which has long been committed to protecting global security, was caught off guard. Its commander, "One-Eyed Man" Nick Fury (Samuel L. Jackson), realized that he must create a "strongest" alliance organization in history, gathering superheroes from all sides to work together to save the world from dire straits and resist the invasion of dark forces. So the "Avengers" composed of six superheroes - "Iron Man" (Robert Downey Jr.), "Thor" (Chris Hemsworth), "Captain America" (Chris Evans), "Hulk" (Mark Ruffalo), "Black Widow" (Scarlett Johansson) and "Hawkeye" (Jeremy Renner) came into being. They each showed their magical powers, united as one, and finally defeated the evil forces and ensured the safety of the earth.