Only a few learn the truth of their identity and make it to Half Blood Hill, a Long Island summer camp dedicated to training young demigods. Such is the revelation that launches young Percy Jackson on a quest to help his real father, Poseidon, avert a war among the gods. With the help of Grover the satyr and Annabeth the daughter of Athena, Percy must journey across the United States to catch a thief who has stolen the original weapon of mass destruction - Zeus' master bolt.