When Cassie Lang’s quantum experiment pulls the family into the Quantum Realm, Scott, Hope, and Janet must confront the realm's brutal tyrant: Kang the Conqueror, a time warlord exiled from the multiverse. As Scott faces his failures as a father, and Hope uncovers Janet’s secrets, a resurrected, cybernetically-enhanced Yellowjacket joins Kang's ranks — forcing the heroes to choose between escape and stopping Kang’s rising multiversal empire.
