Black Manta will stop at nothing to take Aquaman down once and for all. To defeat him, Aquaman must turn to his imprisoned brother Orm, the former King of Atlantis, to forge an unlikely alliance in order to save the world from irreversible destruction.
Super-Hero partners Scott Lang and Hope van Dyne, along with with Hope's parents Janet van Dyne and Hank Pym, and Scott's daughter Cassie Lang, find themselves exploring the Quantum Realm, interacting with strange new creatures and embarking on an adventure that will push them beyond the limits of what they thought possible.