Two years after the events of Captain America: Civil War, and before the events of Avengers: Infinity War, Scott Lang, now under house arrest after the events of Civil War, tries to balance his home life as a father with his responsibilities as Ant-Man. When Hope van Dyne and Hank Pym present him with a new mission to bring to light secrets from their past, Lang teams up with Van Dyne as the new Wasp.