Nicki is determined to solve the mystery at Pine Grove Middle School when a student's research paper is stolen and circumstantial evidence points to her new friend Kim, a Korean American.
Concerned when their elderly friend Mrs. Greaves is threatened, Nicki and four other girls work to solve the mystery before she loses everything she loves.
Nicki is plunged into another mystery when she accidentally takes the wrong suitcase from the airport and finds it filled with bundles of hundred dollar bills.