Max receives a mysterious text message from his former father-in-law and mentor Zharov; he goes to the sender's house and sees something shocking and finds his future best friend, the Dog.

Max gets to the first suspects in the murder of Zharov and he follows the trail; his relationship with his dog comes to a boil.

Max finds a dead body and the gun, in his apartment; now a suspect of murder, he goes on the run with the dog.

Max is still the main suspect and is now on the most wanted list; Lena and Max accidentally meet and Lena has her ex-husband do something extremely unusual.

After the attack on Leonidov, a side little investigation begins.

Four people are murdered over drugs; Max finds the main evidence and starts the investigation.