The ocean is a vicious place. Deeper and darker than Tristan could have imagined. Beneath its calm blue surface, an ancient battle is churning —and no one is safe.
In the quest for the Sea Throne, Tristan has already watched one good friend die. Now he must lead the rest on a dangerous voyage in search of the trident that will make him king. But while Tristan chases his destiny, the dark forces racing against him are getting stronger, and the sea witch of his nightmares is getting closer.
Battling sea dragons and savage creatures of the deep, Tristan needs his friends' support. But they each have their secrets, and a betrayal will force Tristan to choose between his crown and his best friend Layla — the only girl he's ever loved.