Batman must face his most ruthless nemesis when a deformed madman calling himself "The Joker" seizes control of Gotham's criminal underworld.

Fuelled by his restored faith in humanity and inspired by Superman's selfless act, Bruce Wayne and Diana Prince assemble a team of metahumans consisting of Barry Allen, Arthur Curry and Victor Stone to face the catastrophic threat of Steppenwolf and the Parademons who are on the hunt for three Mother Boxes on Earth.

A cooler-than-ever Bruce Wayne must deal with the usual suspects as they plan to rule Gotham City, while discovering that he has accidentally adopted a teenage orphan who wishes to become his sidekick.