Superman left, and the world fell into mourning. But the world is not at peace, evil forces are ready to move, and crime is rising again. What's worse, a terrible threat from ancient times is gradually approaching. A long, long time ago, the Atlanteans, Amazons and Protoss united to fight against the evil Steppenwolf. After a hard struggle, Steppenwolf was finally defeated and forced into exile, and the three boxes he left on Earth were guarded by Atlanteans, Amazons and ordinary humans respectively. Now Steppenwolf has made a comeback, and the earth is shrouded in the shadow of evil. At this critical juncture, five justice warriors including Wonder Woman Diana (Gal Gadot), Batman Bruce Wayne (Ben Affleck), Aquaman (Jason Momoa), Flash (Ezra Miller), Cyborg Victor Stone (Ray Fisher) and others came together. They formed a Justice League and started a desperate battle with the Steppenwolf army...