The film tells about the history of the pioneer organization in the USSR. The film includes footage of documentary chronicles about the help of pioneers to adults in the city and in the countryside, about the participation of pioneers in educating the illiterate and in agitational propaganda of collective farms, about feasible assistance to the industrialization of the country and about participation in the Great Patriotic War. A fragment from the feature film "Eaglet", in which the main character of the film V.Kotik blows up a car with the Germans (synchronously). The film shows photographs and monuments of pioneer heroes, pioneer work on the routes of the All-Union march of pioneer detachments: the winning class on the route to the "Land of Knowledge", the school museum of V. I. Lenin; School Museum of Military Glory; various affairs of children - participants of the All-Union operation "Green outfit of the Motherland" and routes "Pioneer stroy". The solemn promise of the Octobrists, joining the ranks of the Lenin All-Union Pioneer Organization (synchronously). A solemn parade of pioneers on Red Square.