A new employee, Stas Dyomin, a GRU special forces major with rich experience in military operations in the hot spots of Africa and the Middle East, comes to the SOBR specialized canine detachment. There he meets his comrade Maks Kuptsov, who introduces him to his partner - the most important employee of the squad - a fighting dog named Rembo. Despite his excellent training, Stas has to learn a lot at his new duty station and, together with his four-legged friend Rembo, go through the most dangerous trials. He is waiting for the detention of dangerous terrorists, the rescue of hostages, the capture of dangerous recidivists and the elimination of gangs.