Former GRU major and now top-class killer Viktor Krokhin takes on the task of fulfilling a complex contract. The target is Serbian terrorist Stojan. The customer is a top-secret international organization. To complete the task, a killer needs a worthy partner. He chooses his former colleague, Captain Roman Morozov, despite the fact that Krokhin has a very difficult relationship with him. They were once friends, but then they became enemies. It would seem that going on a risky business with an enemy is suicide. But Krokhin does not give up his choice. He has come up with a plan: Morozov must be used in the dark...