Ant-Man and the Wasp: Quantumania is about the adventures of Ant-Man, who suddenly finds himself in the Quantum Realm with his family.
Ant-Man became very popular with people after Avengers: Endgame and they are enjoying it.
However, when his daughter Cassie sends a signal to the Quantum Realm with the vehicle he built, he suddenly finds himself in a completely different world.
He and his family are accompanied by Hope’s father, Hank Pym, and mother, Janet Van Dyne, in this extraordinary universe.
Having discovered the Quantum Realm, the family encounters extraordinary creatures in the process.