When demonic cheerleaders invade his high school, Percy Jackson hurries to Camp Half Blood, from whence he and his demigod friends set out on a quest through the Labyrinth, while the war between the Olympians and the evil Titan lord Kronos draws near.

While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods to stop the Lord of Time.

After Iris creates rainbow slides that allow her to get to Earth from Mount Olympus quickly, she becomes a courier in high demand.

Perseus and the Olympians face off against the snake-haired Medusa.

"Who cut off Medusa's head? Who was raised by a she-bear? Who tamed Pegasus? It takes a demigod to know, and Percy Jackson can fill you in on the all the daring deeds of Perseus, Atalanta, Bellerophon, and the rest of the major Greek heroes. Told in the funny, irreverent style readers have come to expect from Percy --

The Greek and Roman demigods will have to cooperate in order to defeat the giants released by the Earth Mother, Gaea. Then they will have to sail together to the ancient land--Greece itself--to find the Doors of Death.

Demon must find and cure whatever is making the dragon so smelly -- and sad -- without the help of his magic medicine box -- Cover.

Eight-year-olds Aphrodite, Athena, and Persephone continue their journey on the Hello Brick Road to meet Zeus and meet a new, timid friend, Artemis.

Zeus and the rest of the Olympians try to rescue Artemis from the clutches of a titan named Crius who has her under a sleeping spell.

When Zeus meets a boy named Hermes who claims to know the Olympians' next quest, Zeus repays the information with winged shoes, setting off an adventure to fulfill Pythia's next quest and find a winged horse.