Thanos has achieved his goal: with a simple click, half of the living beings have been eradicated from the universe. After the defeat, things do not look good for the remaining Avengers. Iron Man / Tony Stark is dying, wandering alone in a ship whose food, water and oxygen are scarce. On Earth, the team commanded by Captain America / Steve Rogers, Hulk / Bruce Banner, Thor and Black Widow seems to have given up all hope. The losses suffered have also caused them to forget a part of themselves. Everything changes when the heroes receive a video of Ant-Man / Scott Lang, who, presumably, should be trapped in the Quantum Kingdom. How did you get out?