Marvel Studios: Assembling A Universe, Marvel's first television special, documents the exciting story behind Marvel Studios and the Marvel Cinematic Universe, featuring exclusive interviews and behind-the-scenes footage from all of the Marvel films, the Marvel One-Shots and Marvel's Agents of S.H.I.E.L.D.. Viewers will walk a clear path through this amazing and nuanced universe, featuring sneak peeks at the future of Marvel's Agents of S.H.I.E.L.D. on ABC, new footage from Marvel Studios' upcoming theatrical releases, Captain America: The Winter Soldier and Guardians of the Galaxy and a sneak peek at the upcoming Marvel's Avengers: Age of Ultron. The first clip has been released, which looks at why the studio moved first with Iron Man and Hulk. Check out this sneak peek, and then be sure to watch Marvel Studios: Assembling A Universe when it premieres March 18, only on ABC.