It came from Robert Downey Jr., who has actually seen Avengers: Doomsday and couldn't hide how excited he is about what Marvel Studios has put together. During an interview with Entertainment Weekly, the cast of Avengers: Doomsday was asked if anyone had seen the completed film. It's the first Avengers film since Avengers: Endgame, which became the highest-grossing Marvel Studios film ever with an incredible $2.8 billion worldwide during its theatrical run. According to the official synopsis: "Universes collide and the Multiverse Saga begins its final chapter in Marvel Studios' Avengers: Doomsday. Avengers: Doomsday flies into theaters on December 18.