Hades makes a deal with Poseidon to hand over Athens, in order to rule the whole country, causing Athens to becomes a place of doom and Prometheus Academy to become the home base of torment for students.

Hades decides to throw a pool party, and invites all of Olympus to take a dip in the Lethe Waters of Forgetfulness, causing them all lose to their memories. Meanwhile, with the gods out of commission the whole world is in chaos.

Phil needs a housesitter, so that he can go to a convention and Hercules volunteers to watch his island for him, however things go from bad to worse, when Hercules throws a party and is busted by Poseidon.

Poseidon stages a boat race and Hercules and Icarus enter their own boat, but Hercules turns on his friend and joins Adonis, only to be punished for his pride by Poseidon.

When Triton, the son of Poseidon, arrives at Prometheus Academy, Hercules does his best to help him fit in. But when things don't go as planned Hercules abandons his young charge, who then steals his father's magic triton and wield a little power on campus.