Twelve-year-old supernatural sleuth, Dotty Morgan, becomes embroiled in an ancient conflict between rival supernatural factions who all want the same thing—the Japanese sword her father gave her on her last birthday. The timing couldn’t be worse. She’s busy navigating the complications of middle school romance with her girlfriend, Hannah, and dealing with her mother who wants to ask Dotty’s former bully to move in. Somehow, she makes time to investigate a four-hundred-year-old murder to keep safe the people she loves and solve the Case of the Zombie Ninjas, even though the undead, winged tengu, and a demon known as an oni stand in her way.