"Avengers: Doomsday" trailer: Doctor Doom vs MCU, X-Men and Captain America return

Marvel has released the full trailer for "Avengers: Doomsday," previously seen only by CinemaCon attendees. The film unites nearly every MCU hero and marks the culmination of the multiverse storyline built across seven years and three phases since "Avengers: Endgame." Doctor Doom faces off against the Avengers and X-Men, while Captain America also returns.