But while Tristan chases the trident, dark forces are getting stronger and the sea witch of his nightmares is getting closer.

Realizing he can't run forever, he makes contact with her - and finds a darker side of the story told to him by his grandfather the Sea King, a story that brings to light another heir to the throne.

Tristan has more questions than ever, but when the sea witch kidnaps Layla, he must choose between completing his quest and rescuing the only girl he's ever loved.