The fourteen Olympians follow rumors of the Titans' escape to Olympus, but just as they reach the sea the group encounters Gaia, who offers her help in defeating Cronus. Gaia is on the side of the Olympians, partly because she believes that they will be better for the planet than Cronus, but also because she is angry with her son. He has imprisoned his three brothers: Briar, Kottos, and Gyes. She says if the Olympians free them from Tartarus, they...

"Zeus and his fellow gods-in-training face a new challenge in the underworld when they attempt to capture Cerberus,the three-headed guardian and cherished pet of Zeus's brother Hades. But they find themselves up against even more than they anticipated when they have to face off against Melinoe and her skeletal minions"--

In order to placate Eurythseus, Hercules must steal a golden belt from an Amazon warrior, but first he encounters the fearsome giant Alkyoneus, who plans to feed him to his seven hungry daughters.