After graduating from a military school, Alexei Shvetsov and Sasha Kozlov are filled with hopes and aspirations. Alexei plans to marry his beloved Anya, while Sasha plans to pursue a doctoral degree.
Alexei earns the trust of the gang leaders with ease, thanks to his exceptional military skills that set him apart from his peers. He soon becomes a valuable asset in the gang's battles, earning their respect and admiration.
Sasha, together with his colleagues from the criminal investigation department, doggedly pursues the trail of crimes committed by Alexei's gang, evolving from a mere theorist into a capable operative.
As the city's gangster groups engage in a battle for territory and influence, Alexei rises in the ranks as an elite killer, entrusted with the task of eliminating rival gang leaders. Meanwhile, Sasha and Anya relocate to a new apartment.
Alexei finds himself under threat from members of his own gang, who fear that he may expose their involvement in a high-profile murder for which he is the sole witness and perpetrator.
Despite the danger and suspicion surrounding their relationship, Anya continues to meet with Alexei at her friend's apartment. Sasha becomes increasingly suspicious of Anya's behavior, as she often arrives late at night.
Sasha's discovery of Anya's relationship with Alexei leads to a violent confrontation, during which he accuses her of consorting with a criminal and physically abuses her. Alexei accompanies the Pyryaev brothers to eliminate Cyclops
Sasha and his team of investigators gather substantial evidence of the Pyryaev brothers' involvement in a series of crimes, including contract killings. Sasha organizes a wiretap on a gathering of gangster leaders led by the brothers
The Pyryaevs send Alexei on a new mission involving stealing precious gems. Alexei misses the target, and the investigators begin to trail him. Sasha collects enough evidence against Alexei, who is placed on the federal wanted list.
The Pyryaev brothers are embarking on a national money deal, but they face an obstacle: the chief engineer at the aviation plant refuses to take bribes. The gang decides to eliminate him, and Sasha's team learns of the assassination plan.
Alexei, wounded and conflicted, is caught in a dangerous situation. He refuses to kill his childhood friend, Sasha, but the Pyryaevs threaten Anya's life. Meanwhile, the police have gathered enough evidence to bring the gang to justice.
