Undine gets along well with her unconventional mother, she adores her baby brother, and she has a devoted kindred spirit in her best friend and next-door neighbor, Trout. It's inconvenient that Trout has a sloppy crush on her, but Undine tries to overlook this. Undine is basically satisfied . . . until strange things begin happening to her. It starts with an odd feeling, a shadow in the mirror, a whisper only Undine can hear: It's time to come home. And it builds. One hot day, when Undine imagines knitting together a few scattered clouds, she creates a massive thunderstorm. Who is Undine? Where does her power come from? What is she meant to do? Undine needs answers to these questions, so she sets off in search of a father she'd always believed was dead and a self she's only beginning to discover. But Undine's magic is powerful, wild, and dangerous—and her feelings as she uncovers the truth are even fiercer. Will Undine find herself or lose herself . . . and everyone she loves?