After hearing a warning about the children of the Avengers from Kang, who has returned from the future, Captain Steve Rogers assembles a team of the Avengers to deal with the threat, including Iron Man, Captain America, Spider-Man, Thor, and Spider-Woman.
When an alien race decides to put Jean Grey on trial for the genocide committed by Dark Phoenix, the Guardians of the Galaxy and the All New X-Men must work to save her from the twisted intergalactic justice.