"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...

All year the half-bloods have been preparing for battle against the Titans, knowing the odds of a victory are grim. Kronos's army is stronger than ever, and with every god and half-blood he recruits, the evil Titan's power only grows. While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods...