For generations, Sybaline’s family has lived in a magical valley in the Appalachian mountains, helping the magic grow the land. But now the government has ordered them to relocate; their valley is needed to create a dam for electricity. In one week, their home will be flooded. Sybaline can’t imagine life without her home and without magic, so she stays. Using her magic she builds a wall, and as water floods the valley, it ends up covering her house anyway, leaving her living beneath the lake itself. But there is a consequence to using magic in such a way, one that will transform both herself and the friends who end up trapped beneath the water with her.