Although she looks like a California surfer, Bekah Yancey is actually a powerful, but not yet very experienced witch who performs the duties of Baba Yaga. Luckily, she has a dragon in the form of a dog for moral support, which is especially important when they are faced with her most serious work... A mysterious toxin forces the Selkies and Mers to flee their homes in the deep sea trenches of Monterey Bay. To investigate, Beca hires the boat of combat-scarred former US Marine, Marcus Dermott, and his fisherman father. While diving to try to understand what is happening, Beca drives Marcus crazy with her New Age ideas and dazzling blue eyes. She considers him stern and irritable (and, by the way, very attractive). Meanwhile, Prince Charming Shelkie has a plan in mind that involves Beka. Only by trusting in her strength can Beka survive this underwater race, choose the right man and choose the path she will follow for the rest of her life...