As Robin and Supergirl race to retrieve the secrets of the Devil Nezha from ancient China, Batman and Superman get more than they bargained for in the present! To save humanity from the fires of the demon, the World's Finest must go toe-to-toe with the protector of Sector 2814...Hal Jordan. Using their combined willpower, Batman and Superman wrest away Hal's power ring, amalgamating into an invincible new super hero!