Waiting fans of "Avengers: Age of Ultron" had a preview of the film through an episode of Marvel's "Agents of S.H.I.E.L.D."  The episode showed a short clip that serves as a teaser for the highly-anticipated movie.

Featured in the clip are the Avengers having a little fun. The famous league of heroes are just enjoying themselves, attempting to lift Thor's hammer. Captain America tries to lift it, but fails.

Thor laughs, saying, "You're all not worthy."

Then, the antagonist Ultron shows up. He tells the team that they are all not worthy.

Although the trailer leaked earlier than planned, it seems that the production team is pleased as the total views of the trailer surpassed views of the trailer of the previous film. According to reports, the second "Avengers" film gives more attention to the villain – Ultron.

The summary of the movie from Marvel and Disney Pictures reads:

"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."

Ultron, played by actor James Spader, is a technological villain that dispises human existence. Elizabeth Olsen and Aaron Taylor-Johnson are cast for supporting roles in the film. Robert Downey Jr., Chris Evans, Chris Hemsworth, Mark Ruffalo, Scarlett Johannson, and Jeremy Renner reprise their roles as members of The Avengers.

"Avengers: Age of Ultron" will hit the movie theatres on May 1, 2015.