When Tony Stark and Bruce Banner try to jump-start a dormant peacekeeping program called Ultron, things go horribly wrong and it's up to Earth's mightiest heroes to stop the villainous Ultron from enacting his terrible plan.
Director: Joss Whedon
Writer: Joss Whedon, Stan Lee, Jack Kirby
Cast: Robert Downey Jr., Chris Evans, Mark Ruffalo
