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 plans. 141 min | Genre: Action, Adventure, Sci-Fi | Stars: Robert Downey Jr., Chris Evans, Mark Ruffalo | Director: Joss Whedon