With S.H.I.E.L.D. destroyed and the Avengers needing a hiatus from stopping threats, Tony Stark jumpstarts a dormant peacekeeping program, Ultron: a self-aware, self-teaching, artificial intelligence. However, his plan backfires when Ultron decides that humans are the main enemy and sets out to eradicate them from Earth, leaving it up to Iron Man, Captain America, Thor, the Hulk, Black Widow and Hawkeye, along with support from Nick Fury and Maria Hill, to stop him. Along the way the Avengers encounter the powerful twins Pietro and Wanda Maximoff, as well as the familiar Vision.
The sequel was announced in May 2012, after the successful release of The Avengers. Whedon, the director of the first film, was brought back on board in August and a release date was set. By April 2013, Whedon had completed a draft of the script, and casting began in June with the re-signing of Downey. Second unit filming began in February 2014 in South Africa with principal photography taking place between March and August 2014. The film was primarily shot at Shepperton Studios in Surrey, with additional footage filmed in Italy, South Korea, Bangladesh, New York, and various locations around England.
Avengers: Age of Ultron is scheduled for release on May 1, 2015 in North America, in 3D and IMAX 3D. Two sequels, Avengers: Infinity War Part 1 and Avengers: Infinity War Part 2, are scheduled to be released on May 4, 2018 and May 3, 2019, respectively.