Three women "over thirty" live in the summer with small sons in the country. Svetlana, Tatyana and Ira are second cousins, they raise children alone (although Tatyana, the only one of them, has a husband). Women quarrel, figuring out who owns half of the dacha, whose son is the offender, and whose is offended ... Svetlana and Tatyana live in the country for free, but the ceiling flows in half of them. Ira rents a room with Fedorovna, the mistress of the second half of the cottage. But she is forbidden to use the toilet belonging to her sisters.

Ira meets her neighbor Nikolai Ivanovich. He takes care of her, admires her, calling her the queen of beauty. As a sign of the seriousness of his feelings, he organizes the construction of a toilet for Ira.

Ira lives in Moscow with her mother, who constantly listens to her own illnesses and reproaches her daughter with the fact that she leads an incorrect lifestyle. When Ira was fifteen, she ran away to spend the night at the train stations, and now, having arrived with a sick five-year-old Pavlik, she leaves the child with her mother and quietly leaves for Nikolai Ivanovich. Nikolai Ivanovich is moved by the story of Ira about her youth: he also has a fifteen-year-old daughter, whom he adores.

Having believed in the love of Nikolai Ivanovich, about which he speaks so beautifully, Ira goes after him to Koktebel, where her lover is resting with his family. In Koktebel, the attitude of Nikolai Ivanovich to Ira is changing: she annoys him with her devotion, from time to time he requires the keys to her room to retire with his wife. Soon, the daughter of Nikolai Ivanovich learns about Ira. Unable to withstand his daughter’s tantrum, Nikolai Ivanovich chases away a tired lover. He offers her money, but Ira refuses.

On the phone, Ira tells her mother that she lives in the country, but cannot come for Pavlik, because the road was washed out. During one of the calls, the mother reports that she urgently goes to the hospital and leaves Pavlik alone at home. Calling back a few minutes later, Ira realizes that her mother did not deceive her: the child is alone at home, he has no food. At Simferopol airport, Ira sells her raincoat and on her knees begs the airport duty officer to help her fly to Moscow.

Svetlana and Tatyana in the absence of Ira occupy her country house. They are determined, because during the rain half of them completely flooded and it became impossible to live there. The sisters quarrel again over raising their sons. Svetlana does not want her Maxim to grow up as a slob and die as early as his father. Suddenly, Ira and Pavlik appear. She says that her mother was admitted to the hospital with hernia restrained, that Pavlik was left alone at home, and she miraculously managed to fly out of Simferopol. Svetlana and Tatyana announce to Ira that they will now live in her room. To their surprise, Ira does not mind. She hopes for the help of her sisters: she no longer has anyone to count on. Tatyana says that now they will take turns to buy food and cook, and Maxim will have to stop fighting. “There are two of us now!” She says to Svetlana.