Marvel Studios kicked off the Marvel Cinematic Universe nearly 11 years ago with 2008's Iron Man. Back then, they had a relatively modest vision of building to The Avengers by assembling a team of heroes from their respective origin movies into a single unit. In the decade since Robert Downey Jr. made his debut as Iron Man, the MCU has grown to include superheroes from all across the universe, from Earth's Mightiest Heroes to the Guardians of the Galaxy. Now, Avengers: Endgame marks the 22nd film in the MCU and sets out to achieve a feat Hollywood has never seen attempted before by ending the story that first began in Iron Man. And it does, in a spectacular accomplishment. Avengers: Endgame wraps up the story of the MCU so far, delivering an epic superhero adventure while honoring the past in a satisfying finale.