Author(s): Alex Irvine

Children & Young Adult

Things go very wrong when Tony Stark and Dr. Bruce Banner begin work on a global peacekeeping system, and the Earths Mightiest HeroesIron Man, Captain America, Thor, the Incredible Hulk, Black Widow, and Hawkeyeare put to the ultimate test. The Avengers must stop the evil Ultron from executing his terrible plan, which threatens the fate of humanity.