The mightiest heroes of the Marvel universe reunite to face their greatest threat yet! When Tony Stark attempts to jumpstart a dormant peacekeeping program, things go horribly wrong. The result is Ultron – a terrifying technological villain determined to wipe out humanity.
Iron Man, Captain America, Thor, Hulk, Black Widow, and Hawkeye are pushed to their limits in a battle where the fate of the entire planet is at stake. Along the way, they also encounter the mysterious new arrivals, Pietro and Wanda Maximoff, and gain a powerful new ally, Vision.
