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 war between the gods.

Persephone's relationship with Hades has gone public and the resulting media storm disrupts her normal life and threatens to expose her as the Goddess of Spring. Hades, God of the Dead, is burdened by a hellish past that everyone's eager to expose in an effort to warn Persephone away. Things only get worse when a horrible tragedy leaves Persephone's heart in ruin and Hades refusing to help. Desperate, she takes matters into her own hands, striking...

"Seventeen-year-old Pierce Oliviera knew by accepting the love of John Hayden, she'd be forced to live forever in the Underworld. But now her happiness and safety are threatened because the Furies have discovered that John has broken one of their strictest rules, and the only way to fix the balance is for someone to die"--

"Persephone is the Goddess of Spring in title only. Since she was a little girl, flowers have only shriveled at her touch. After moving to New Athens, she hoped to lead an unassuming life disguised as a mortal journalist. All of that changes when she sits down in a forbidden nightclub to play a hand of cards with a hypnotic and mysterious stranger. Hades, God of the Dead, has built a gambling empire in the mortal world and his favorite bets are rumored...

When Camp Half-Blood, the only safe haven for demigods, comes close to being overrun by mythological monsters, Percy must find his best friend Grover, who is prisoner on an island in the Bermuda Triangle, and then set out to save the Camp.