Supremely confident middle-school student Nate Wright manages to make getting detention from every one of his teachers in the same day seem like an achievement.

Percy, expelled from six schools for being unable to control his temper, learns the truth from his mother that his father is the Greek god Poseidon, and is sent to Camp Half Blood where he is befriended by a satyr and the demigod daughter of Athena who join him in a journey to the Underworld to retrieve Zeus's lightning bolt and prevent a catastrophic war.

Bobby Pendragon's most recent traveling takes him to the familiar First Earth, where he and fellow Traveler Spader must stay on the tracks of Saint Dane and his new evil plot, while also dealing with the tumult of New York City in 1937.