Jason, Piper, and Leo, three students from a school for "bad kids," find themselves at Camp Half-Blood, where they learn that they are demigods and begin a quest to free Hera, who has been imprisoned by Mother Earth herself.

"Greek and Roman demigods from the Prophecy of Seven must work together to seal the Doors of Death--and help Percy and Annabeth escape the Underworld in the process"--Provided by publisher.

Introduces Hera, Zeus's wife and goddess of air, sky, and the heavens, and the only thing Zeus is afraid of.

Eleven-year-old Demon had never met his father, the god Pan, until the day he was whisked away to the stables of Olympus and charged with looking after all of the mythical creatures there, a task which is complicated by the tempestuous gods and goddesses and Heracles, who keeps killing the immortal beasts.