When the boys are on their way home from a masquerade party when they hear noises in a warehouse and investigate. The warehouse is being robbed and the boys are captured by the police and wrongly convicted of robbery. Their lawyer Gabe is able to reduce the sentence to just probation, but Slip insists that he and Sach should accept jail time to determine who is behind the series of robberies in the neighborhood. He deduces that the instructions are being sent from inside the prison by a
shortwave radio. Upon entering the prison, Slip and Sach are mistaken for notorious criminals and befriend the masterminds behind the robberies. Whitey, who owns a shortwave radio, overhears the plans and informs Louie, who tells the police that his sweet shop will be robbed next. The cop does not believe him, but eventually Louie is able to persuade the warden of the prison when Whitey hears about a jailbreak attempt. The warden plans a sting operation and catches the gang behind the robberies, and the boys are exonerated. ==Cast==