Marvel maniacs and casual superhero fans alike -- get ready to geek out.

The first official Avengers trailer has been released, and it's everything we could have dreamed of after Nick Fury (a.k.a Samuel L. Jackson) uttered, “You have become part of a bigger universe,” at the end of the original Iron Man three entire years ago.

In the trailer, Fury again lays out the stakes, telling us that a "group of remarkable people" has been brought to protect the earth from bad guys (a.k.a Thor's black sheep brother Loki, played by Tom Hiddleston), battles and, you know, general extinction.

The flick stars Robert Downey, Jr. as Iron Man, Chris Evans as Captain America, Chris Hemsworth as Thor, Jeremy Renner as Hawkeye, Scarlett Johansson as Black Widow and Cobie Smulders as S.H.I.E.L.D. Agent Maria Hill, and you can see all of them kicking some major butt in this two minute preview (above).