A seemingly chance encounter at the side of the road, a terrible car crash, and one infuriatingly handsome green-eyed monster hunter...life for this girl is about to seriously change. A few years after the ambiguous death of her father, twenty-one-year-old Rayne Adams meets Sam and Dean who introduce her to the world of the supernatural. As she starts to unravel the mystery her father died trying to solve, Rayne decides that becoming a hunter is who she was born to be. Joining the Winchester brothers on the road, the spunky redhead begins to learn more about the respective roles that Heaven and Hell have ordained for her to play as well as the mysterious connection between her and Dean that does not allow them to separate.