On Whidbey Island, north of Seattle, the Gray family's quintuplets join the search for a young boy gone missing and soon discover deep family secrets and that crimes have been committed. Pixie Gray and her brothers have always been bigger and blonder than their neighbors, as if they were birthed from Whidbey Island itself. Together, they serve as an unofficial search-and-rescue team for the island. When a young boy goes missing, they find his mother's body instead. Everything dead eventually washes up in Useless Bay, but this time something sinister is rising from the water-- along with the Gray family's secrets....