'Avengers: Age of Ultron' Plot Revealed

Find out what Cap America, Iron Man and the gang are up against.

ByABC News
September 17, 2014, 10:08 AM
Chris Evans appears here as Captain America along side Chris Hemsworth in the upcoming Avengers: Age of Ultron.
Chris Evans appears here as Captain America along side Chris Hemsworth in the upcoming Avengers: Age of Ultron.
Marvel Studios/Album/Newscom

— -- Marvel Studios has released a rough outline of what to expect this coming May from the highly-anticipated “Avengers: Age of Ultron."

The plot confirms a lot of the rumors floating around on the web, including that Iron Man himself might be in some way responsible for the mess that is the nasty Ultron.

"When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth’s Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance," the release from Marvel said.

Read: Scarlett Johansson Reveals 'Everything Is on Schedule' With 'Avengers 2'

It continued, "As the villainous Ultron emerges, it is up to The Avengers to stop him from enacting his terrible plans, and soon uneasy alliances and unexpected action pave the way for an epic and unique global adventure."

The release adds things we know like that Robert Downey Jr. is back as Iron Man, along with Chris Evans as Captain America, Chris Hemsworth as Thor and Mark Ruffalo as The Hulk.

James Spader will play Ultron, "a terrifying technological villain hell-bent on human extinction," according to the release.

Paul Bettany, who voices and has been voicing Jarvis -- Iron Man's computer -- for years will actually be seen as The Vision in this film!

"Avengers: Age of Ultron" hits theaters on May 1, 2015.