A man and a woman are fishing on a remote lake, unaware of how their fishing trip will end. When the sun sets, the inevitable will happen.

Olga Alexandrovna was an easy-going person. She was beautiful, lively, never wanted much from life but never missed what was coming her way. She was on good terms with everybody: her husband, her son, her lovers… It was only with her daughter Lena that her relationship was complicated. Lialia had a theory that infidelity served to strengthen marriage ties. Once a schoolmate dropped in to see her son. He attracted Lialia’s attention and shortly they became intimate. Their relationship could have gone on and on but once Lialia caught her young lover with her own daughter…

Every autumn Timofey faces an irresistible melancholy. To overcome this feeling, he decides to make a documentary about autumn, but his shooting is disrupted by a girl who accidentally falls in love with the would-be documentary filmmaker.