This is the romantic comedy about young married couple who takes glossy magazine’s articles too seriously. Olya and Kolya have quite and happy marriage, but it gets under the threat of collapse because of careless article written by young journalist Lena about 9 signs of male and female unfaithfulness.

Petr, Kolya’s friend and an awful womaniser, aggravates the situation by falling for Lena. Kolya draws more suspicions upon himself by helping his friend with advances. In addition, Olya’s friend Rita, who is a divorced male-eater, decides to target Kolya. On top of it all Olya’s attempts to attract her husband’s attention just arouses Kolya’s suspicion about her faithfulness.

The suspicions are getting stronger. All the signs from the article coincide with young people’s life.

Will the characters of this splendid comedy stand test?

Will they understand that the whirlpool of events that broke the steady stream of their routine life help them realize that they are actually happy together?

Will these 9 signs of unfaithfulness become the 9 lessons of love for Olya and Kolya?