The action takes place in Vyborg. Captain Yevgeny Chagin, along with his colleague, is sent to the scene of an incident: a farmer killed three criminals who broke into his house in the suburbs at night. It turns out that one of the criminals was Chagin's childhood friend. The farmer tells the captain that he couldn't immediately pick up a weapon. After he killed two of the criminals, he had to chase down the third. The third criminal dropped dead near the gate. Chagin knows that his friend could be charged with excessive self-defense. He decides to help the farmer.