Based on materials from real criminal cases, it follows the trial of the trade mafia.

Several days from the life of a landowner's estate on the eve of Christmas are shown through the perception of a boy. The action takes place in Russia in the second half of the 19th century.

Twelve-year-old Nina's mom returns from a trip and finds out that her daughter is in the hospital. The reason for the girl's state of shock is the loss of her beloved dog. The dog faces many challenges and adventures on the way to his home.