Professor Radonov is testing a device for moving the human mind in time and space. Its work is controlled by senior leaders of the Ministry of Defense and State Security, since they see the possibility of winning in continuous military-political games. However, Radonov's system turns out to be not as perfect as they would like. One of the professor's test subjects accidentally finds himself in the past tense of the current reality, where the main events unfold. FSB Lieutenant Colonel Semyonov, the head of the entire project, is opposed by Artyom and Pavel, young FSB officers. Artyom reads a secret document that came to him by mistake. By doing this, he actually signs his own death warrant. The tester, initially “settled” with Artyom, at the moment of his death moves into Pavel’s consciousness. This unexpected phenomenon caused a chain of further events.