After a successful raid on a HYDRA base, Tony Stark and Bruce Banner create an Artificial Intelligence called Ultron, a peacekeeping protocol designed to help the Avengers protect the world from their enemies. But things go wrong when Ultron sees the human race as a threat and sets out to destroy it along with the Avengers. Now the Avengers, Iron Man, Thor, Captain America, the Hulk, Black Widow and Hawkeye, must reassemble to stop Ultron from causing mass destruction. Aside from this, the Avengers also must take on the powerful twins Quicksilver and Scarlet Witch as well as the new entity called Vision. Also, the Avengers find that things may never be the same again after discovering a power beyond their comprehension.