Get Ready To Assemble: The New 'Avengers' Trailer Arrives Next Week

You'll have to watch 'Agents of S.H.I.E.L.D.' first!

Iron Man, Captain America, Hulk and the rest of their mighty pals are uniting on the big screen once again next summer — and you'll get your first look at the reunion next week.

Marvel has announced that the first official trailer for "Avengers: Age of Ultron" will premiere next Tuesday, October 28. But there's a catch (of course there's a catch): it's premiering right after an episode of "Marvel's Agents of S.H.I.E.L.D." on ABC.

It goes without saying that the "Avengers" trailer will be online at some point in the future, but if you want in on the ground floor if the first look at "Age of Ultron," you'll have to see what Agent Phil Coulson and his allies are up to first.

(And, not for nothing, you should totally be watching "Agents of S.H.I.E.L.D." anyway. It took a while to get going in season one, but ever since the big "Winter Soldier" tie-in episode, it's been consistently awesome. If you're interested in getting back into it, start with "Turn, Turn, Turn" and keep going from there.)

Writer and director Joss Whedon's "Age of Ultron," starring Robert Downey Jr. and Chris Evans, among others, hits theaters on May 1, 2015, putting an end to Marvel Phase Two.

The "Age of Ultron" trailer premieres right after "Agents of S.H.I.E.L.D." on October 28.