Katya is completely disappointed in men, and Sasha can't live a day without a new woman. Chance made them neighbors who couldn't get along. Deciding to reform the self-confident womanizer, Katya uses all means to turn his life into a living nightmare. However, playing with fire can be expensive, because it's only one step from hate to love, even if you don't believe in love.
The year is 1967. A series of mysterious murders of women are taking place in Leningrad. An experienced KGB major, Chuzhbin, and a police captain, Fedorov, are assigned to catch a maniac who leaves mysterious signs next to the victims.