While trying to protect the planet from threats, Tony Stark builds an artificial intelligence system that would take care of world peace. The project ends up going wrong and generates the birth of Ultron. With the fate of Earth at stake, Captain America, Iron Man, Thor, Hulk, Black Widow and Hawkeye will have to band together to once again save the human race from extinction. They learns about a witch called Wanda and his brother Pietro, and they will help the Avengers too.
