Elli is suddenly haunted by a cynical ghost that no one else can see. Reluctantly, she makes a deal: she will help the ghost find peace, and in return he promises to help her with her everyday school problems. During their unusual collaboration, they uncover Mike's forgotten past, while Elli has to face her own problems. On this journey, they both learn about forgiveness and the true meaning of their connection. In the end, Elli is faced with a difficult decision that will decide Mike's eternal fate.