There are worlds parallel to ours, where events develop a little differently. For example, Germany was not defeated in the First World War, and there was no October Revolution in Russia - and by the fifties of the 20th century, the face of the world had changed dramatically. Only people who live in this world love, hate and die just like us. The incessant meat grinder of a terrible long-term war grinds thousands of human destinies. German non-commissioned officer Erich Bossa and Russian officer Nikolai Beregovoy - experienced fighters, demons of battle, battle-hardened veterans - are fighting on opposite sides of the front line. But the inexorable logic of military operations forces their paths to cross...