Про это самое 1 сезон 9 серия — Серия 9

Polina is trying to find out who exactly Egor cheated on her with, and during the investigation she quarrels with her best friend. Egor is suffering from a divorce and has been drinking heavily for several days, which causes a lot of trouble for his neighbor Mitya. But after a trip to the village disco, Mitya himself gets into trouble.