On Whidbey Island, the Gray quintuplets are the stuff of legend. Pixie and her brothers have always been bigger and blonder than their neighbors, as if they were birthed from the island itself. Together, they serve as an unofficial search-and-rescue team for the island, saving tourists and locals alike from the forces of wind and sea. But, when a young boy goes missing, the mysteries start to pile up. While searching for him, they find his mother’s dead body instead—and realize that something sinister is in their midst.