The trailer starts out with Victor Von Doom (Robert Downey Jr.) sitting on a throne as Vanessa Kirby’s Sue Storm (the Invisible Woman) explains how he’s broken as a person. “Victor was always the smartest guy in the room. He used to be different,” she narrates somberly. It’s clear that she and the rest of the Fantastic Four — particularly Pedro Pascal’s Reed Richards — already know Doom and have a complicated past with him. “Everything he loved was taken from him,” she explains.

Doom says, “All of you have lived stolen lives.” Thor confronts Doom but the villain catches his magical hammer and throws it aside easily. Doom uses his magic powers to throw Thor aside and raises an army of Sentinel robots — the iconic androids from the “X-Men” movies — from the ground.

MCU fans will have to wait until December 18 to see “Avengers: Doomsday,” but it’s expected to be massive team up between the Avengers, Fantastic Four, Thunderbolts and even more of Marvel’s stars.

Fox’s “X-Men” cast members are also crossing over into the MCU for “Doomsday.” The returning stars include Patrick Stewart, Ian McKellen, James Marsden, Kelsey Grammer, Alan Cumming, Rebecca Romijn and Channing Tatum.