August 1941. German troops three hundred kilometers from Moscow. On one of the routes followed by the first persons of the state, employees of the Fourth Directorate of the NKVD neutralize a group of German saboteurs, the purpose of which was the physical elimination of Stalin. At the time of the arrest of the group, the saboteurs use an unknown weapon "Panzerknakke", which is similar in strength to a rocket projectile. During the arrest, one of the saboteurs managed to escape, two others were killed, the shooter was detained, but the weapon exploded at the moment of the shot.
