One of the season's major cases involves an IT specialist named Pyotr who seeks justice after his former friend steals the rights to his computer game.

Sanya investigates the case of Pyotr, whose quest for justice leads him to a complicated relationship with a nurse named Anna.

General Karandyshev retires, leading to Colonel Postysheva taking his place. Unexpectedly, Balabin's colleague Gribanov takes over Postysheva's former position instead of Sanya.

The season is typically structured with cases spanning two episodes each. Notable investigations include:

The fourth season of the popular Russian ironic detective series premiered on September 21, 2020 , on the NTV channel . This season consists of 20 episodes , following the adventures of Major Alexander "Sanya" Balabin as he balances complex criminal investigations with his chaotic personal life. Season 4 Plot Overview

Balabin travels to Gelendzhik to dismantle a drug trafficking gang, hunts down "black realtors" (predatory property scammers), and works to identify a "mole" (traitor) within his own department. Cast & Production Sanya Balabin: Konstantin Yushkevich Nikolai Gribanov: Vadim Andreyev Varvara Postysheva: Inga Strelkova-Oboldina Vasily "Kuznechik" Kuznetsov: Ilya Shlyaga Lena Balabina: Irina Nizina Masha Balabina: Mariya Pirogova

The team tracks down a wealthy individual who attempts to cover up a hit-and-run involving a young girl.