A new experimental T-34 tank was manufactured at a secret factory. So far, the first and only copy. Engineers are convinced that they have managed to create a state-of-the-art tank that surpasses all available in the world. On the way to the test site, his crew strayed from the route, the tank ran out of fuel, and he got stuck in the woods near the bridge over the river. Suddenly, a truck with German soldiers appears on the road. At first, everyone perceives them as Poles. It is possible that the tank did not just get lost, but violated the border and now everyone will be considered deserters. But later it became known that the war had begun in the country, and it was really the Germans. Now the tank commander and his engineer have to solve a difficult question – to save valuable equipment and prevent it from being captured by the Germans, or to enter into an unequal battle?