The firm of Green, Greenberg and Greenbaum is in trouble: large quantities of jam are missing from the storage. Worse, two of the senior partners are murdered. The incompetent inspector Klein (Avner Hizkiyahu) is trying to solve the case, without much success, while the cleaning woman Aliza Mizrahi (Edna Fliedel) conducts an investigation of her own and finds the culprit.