After learning that he is the son of a mortal woman and Poseidon, god of the sea, twelve-year-old Percy is sent to a summer camp for demigods like himself, and joins his new friends on a quest to prevent a war between the gods.

Twelve-year-old Addie tries to cope with her mother's erratic behavior and being separated from her beloved stepfather and half-sisters when she and her mother go to live in a small trailer by the railroad tracks on the outskirts of Schenectady, New York.

When two Florida teenagers become stranded on a tiny island in the Everglades, they attempt to walk ten miles through swampland to reach civilization.