The central character is a lonely teacher named Lyudmila Pavlikova. She lives with her mother and teaches music at a local school. The woman is in love with a famous artist, but she has no hope of happiness with him. Meanwhile, one of her students, Katya, decides to introduce her beloved teacher to her father - an operative named Viktor. At first glance, they have nothing in common. Moreover, the man already has a lover. But one day, Katya is kidnapped, and Vitya and Lyuda join forces to search for the girl.