The siblings discover their father has left everything to a woman they have never met. As his death becomes the subject of a police investigation, the siblings hunt for his previous will.

On one of the last days of summer vacation, 12-year-old Yarik and his friend Igor witness a disturbing scene. The boys see a man allegedly strangling a young girl in the woods - but everyone concludes: Igor is sure that the two fell in love, while Yarik is convinced that the woman was killed. The history of finding evidence of a crime is revealed by growing up.

The siblings discover their father has left everything to a woman they have never met. As his death becomes the subject of a police investigation, the siblings hunt for his previous will.