Leah Hawthorne seems like any other 18-year-old who is fresh out of high school. She has an overprotective older brother, John, and she works at a diner. Despite her ordinary appearance, Leah is much more than that. She has visions that let her see the future and is actually an angel. So when a powerful demon second to Satan himself comes to claim her, she meets Dean and Garret, who are angels themselves, and discovers that there are more people like her. She joins their group, The Protectors.