When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth’s Mightiest Heroes 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.

Following the events of Age of Ultron, the collective governments of the world pass an act designed to regulate all superhuman activity. This polarizes opinion amongst the Avengers, causing two factions to side with Iron Man or Captain America, which causes an epic battle between former allies.

In celebration of the publisher’s 75th anniversary, the hour-long special will take a detailed look at the company’s journey from fledgling comics publisher to multi-media juggernaut. Hosted by Emily VanCamp (S.H.I.E.L.D. Agent Sharon Carter), the documentary-style feature will include interviews with comic book icons, pop culture authorities, and Hollywood stars. The special also promises an “extraordinary peek into Marvel’s future!” Might Marvel release the first official footage from next year’s Avengers: Age of Ultron or Ant-Man? If they do, you’ll know about it here.