After Superman makes the ultimate sacrifice to save his fellow heroes, the Justice League and rest of the grieving planet must learn to live in a world without Superman.

The League manage to escape and take refuge at Wayne Manor, while the Thanagarians scout the planet for them and realize their master plan for Earth.

The League defeats the squad of hawkmen sent to kill them at the Batcave, but must now figure out how to stop the activation of the hypergate before it destroys Earth.