After her fiancé dumps her and her beloved Aunt Jenny goes missing, Willa Eklund travels to Lobster Cove with a broken heart to search for Jenny while running her bookstore. When a mysterious man visits the Shucker's Booktique on a stormy night drenched in rain and covered in mud, Willa's heart melts under his stormy gaze. She wants Lon and the answers he may have, but he also has a secret. Can Willa trust him?

Lon Devlin is a Tempest, a water sprite who can only take a human form during stormy nights. He rides the waves, lives by the tides, and nothing can hold him down, not even a beautiful woman. When he visits his mortal friend, he discovers she's missing and her intriguing niece has taken her place. He wants Willa, but he also wants answers. What happened to Jenny?