When teen blues musician Mona Lisa LaPierre is sent by her parents to the boondocks of New Hampshire to stay with her reclusive grandfather, Grumps, she encounters the spirit world in various forms, including a blonde bear named Marilynn and a green-flamed motorcycle that was last seen racing away from the high school on the day a student named Mia Delaney disappeared 18 years ago. Mona's search for Mia's murderer, guided by Grumps and her dead grandmother, Bilki, becomes a quest for identity, love, and meaning.