Mercy wakes on a school bus bound for Paradise, a small town where everyone knows everyone else's business... Or thinks they do. But Mercy has a secret life. She is an angel, doomed to return repeatedly to Earth, taking on a new human form each time she does, in an effort to resolve a cataclysmic rift between heavenly beings.

In Paradise, Mercy meets Ryan, an eighteen-year-old whose sister was kidnapped two years ago and is presumed dead. When another girl is also taken, Mercy knows she has to act quickly and use extraordinary powers to rescue her, even if it means exposing her true identity.