Moonbeam Shadowchaser is studying for midterms when she receives an urgent message from her grandmother, she finds that she has been chosen to Awaken Merlin's Old Soul, residing in a young actor in California. She arrives to find him shooting a movie. When his costar is found strangled in Merlin's trailer, Moonbeam finds herself investigating a murder.

With the net closing around Merlin, Moonbeam enlists the aid of her grandmother and Merlin's Granduncle to search for clues.
Will Moonbeam and her posse be able to keep Merlin out of prison and finish her training?