After learning that the father he never knew is Poseidon, God of the Sea, Percy Jackson is transferred from boarding school to Camp Half-Blood, a summer camp for demigods, and becomes involved in a quest to prevent a catastrophic war between the gods.
Rick Riordan is the author of the first five books in the New York Times best-selling Percy Jackson and the Olympians series: The Lightning Thief; The Sea of Monsters; The Titan's Curse; The Battle of the Labyrinth; and The Last Olympian.
Five book set, one each of: Lightning Thief, Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, and The Last Olympian.