Scott and Hope, along with Hank and Janet, explore the Quantum Realm, where they interact with bizarre creatures and embark on an adventure that goes beyond the limits of what they thought was possible.

Set after the events of Captain America: Civil War, Ant-Man and the Wasp functions as an origin story. Dr. Hank Pym, the original Ant-Man, sends Scott Lang on a mission to run down information about Pym's earliest exploits. Most importantly, Pym wants to know whether his original superhero partner, The Wasp, is still alive. At the same time, Lang, the current Ant-Man, has to make the life balance between being a superhero and a dad work.