Zy-Kree, an escapee from the Phantom Zone (who is very similar to General Zod in both appearance and back story) seeks revenge on Superman by turning the Earth's sun red and thus depowering the man of steel while hiding in the Fortress of Solitude. It is up to Green Lantern and Aquaman to help their friend defeat the evil Kryptonian who has the same powers as Superman. Finally he is sent back to the Phantom Zone.