June 1941. In the front line, German saboteurs capture the "secret" engineer Nikolai Makhanov. Specialists of this level are under the personal control of L.P. Beria, so the best of the best are sent to search - the group of Major Maxim Shelestov. However, no traces of Makhanov were found in the indicated area. What if he's already in enemy territory? But Maxim does not give up. He suggests that the engineer is alive and alone trying to escape from the hands of the Nazis. This incredible version is confirmed after Shelestov's group unexpectedly witnesses a terrible incident...