Marvel released the first trailer for Avengers: Age of Ultron

Marvel released the official first trailer for Avengers: Age of Ultron​. The music accompanying it is haunting as it shows the Avengers not only battling the new threat from Ultron, but each other as well. That's why the Hulkbuster armor for Iron Man is in it — so he can go toe to toe with the Hulk. You can watch the trailer below.

The official plot synopsis for Avengers: Age of Ultron is:

Marvel Studios presents Avengers: Age of Ultron, the epic follow-up to the biggest Super Hero movie of all time. 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. 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.

Marvel’s Avengers: Age of Ultron stars Robert Downey Jr., who returns as Iron Man, along with Chris Evans as Captain America, Chris Hemsworth as Thor and Mark Ruffalo as The Hulk. Together with Scarlett Johansson as Black Widow and Jeremy Renner as Hawkeye, and with the additional support of Samuel L. Jackson as Nick Fury and Cobie Smulders as Agent Maria Hill, the team must reassemble to defeat James Spader as Ultron, a terrifying technological villain hell – bent on human extinction. Along the way, they confront two mysterious and powerful newcomers, Wanda Maximoff, played by Elizabeth Olsen, and Pietro Maximoff, played by Aaron Taylor-Johnson, and meet an old friend in a new form when Paul Bettany becomes Vision.

Hank Pym is the one that created Ultron in the comics, but Director Joss Whedon has said that Pym won't be in the film. So in Age of Ultron, Tony Stark is the one that creates him.

Avengers: Age of Ultron​ releases in theaters May 1, 2015.