Supply clerk Chuvilikhin goes to Moscow to fulfill his coworkers' errands. In the hustle and bustle of the capital, he loses the list where the name of the sheet music to be bought for the director's wife was written down. Anatoly Stepanovich rushes around the city trying to remember the melody.

Intelligence-diversionary group of athletes who know how to shoot snipers, run, jump, feel free in the water and under water, to withstand the monstrous load of hand-to-hand fights, will be able to reach the goal only going together, passing the task as a relay. Seven of them. Among them is a girl swimmer. It will be the most difficult, the last stage of the journey. The plot is based on the real facts of the great Patriotic war.