Energetic People(1988)

Original title: Энергичные люди

Aristarkh Petrovich Kuzkin, the manager of a store, finds himself in big trouble. His wife Vera, having discovered a letter from a woman named Sonya addressed to her husband, decides to take revenge by writing to the prosecutor about his fraudulent activities. Despite all attempts to convince Vera that Sonya's letter was nothing more than a joke, Aristarkh Petrovich and his accomplices are unable to avoid arrest...