Sisters Irina and Anastasia are similar in appearance, but the characters are completely different. Schoolteacher Ira is modest, while the younger Nastya, a singer in a night club, is the complete opposite. One day Nastya asks her sister to help out by temporarily replacing her at work. The trouble-free Ira agrees, but when she arrives at her sister's house, she finds the bloodied corpse of an unknown man. At this moment, she is caught by Nastya's ex-husband, Mikhail. In the dead man, he recognizes the owner of the club where his ex-wife sings. Just released from jail, where he was held on suspicion of murder, Mikhail realizes that he does not need new problems, and decides to hide the body in the trunk of the car. Neither Irina nor Mikhail could have thought that by a fatal accident the car with the "surprise" would be stolen…