This novel narrates about the not popular pages of heroic fight of our well-prepared agents-saboteurs with the German invaders in the first months of Great Patriotic war. Characters of protagonists - lieutenant Белухина and санинструктора Котомкиной - collective, and events are based on the real facts. A secret service agent, mine-layer, sniper Белухин, appearing in the rear of enemy, provides oneself a weapon and live ammunition, knocks together detachment, blows up trains and storages, removes the onslaught of punish, rescues and protects locals. He had exhaust, saving the personnel of tactician of battle actions : blow, manoeuvre, blow.