Marvel Studios presents "Avengers: Age of Ultron," the epic follow-up to one of the biggest superhero movies of all time. When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth's Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance. The film promises lots of visual effects thrills. Marvel's "Avengers: Age of Ultron" will hit theaters on May 1, 2015.