Criminal investigation is investigating the case of robbery of the factory cashier. At the checkpoint of the factory of precision mechanics and optics, two criminals attack the cashier. Criminals manage to escape by the car, waiting for them around the corner. At the scene of the crime, criminal investigation officers arrive Major Dorokhov and Lieutenant Matushkin. They interview witnesses, but they did not remember properly any attackers or machine numbers, but noticed that one prevented the other from firing.

Russian nobleman Fyodor Ivanovich Lavretsky returns to his estate after years in Paris, only to fall in love with his young cousin Liza, complicating his already troubled marriage and leading to a tragic, emotionally complex romance.