"Things go very wrong when Tony Stark and Dr. Bruce Banner begin work on a global peacekeeping system, putting Earth's Mightiest Heroes--Iron Man, Captain America, Thor, the Incredible Hulk, Black Widow, and Hawkeye--to the ultimate test. The evil Ultron threatens the fate of humankind, and it is up to the Avengers to stop his terrible plans. Uneasy friendships and unexpected action make for one exciting, epic adventure"--Back cover.
- ISBN10 0316256447
- ISBN13 9780316256445
- Publish Date 7 April 2015
- Publish Status Out of Print
- Out of Print 6 September 2021
- Publish Country US
- Imprint Little, Brown & Company
- Format Paperback (US Trade)
- Pages 144
- Language English