Captain Nikolay Markin makes his way to the strict regime colony somewhere in Siberia. But he never gets there, because on a halfway, he sees the prisoner Dmitry Voronkov escaping. Without any hesitation, the officer rushes to chase the escapee. Unlike the prisoner who is apparently prepared for the escape, Nikolay has no map, no food, and no weapons. Two friends who became bitter enemies because of a woman - A runaway prisoner and an officer, who protect each other, "back to back" - A man who killed his brother for the profit - The fate will weave these people's lives into a tight knot of mystery, which will appear not to be the only one. And the person who will be able to unravel it, will have to stake his all.