This film is adapted from a famous Polish novel of the same name and tells the story of Warsaw being occupied by Nazi German forces during World War II. Young Polish Boy Scouts bravely fight against German occupiers. This film is adapted from a famous Polish novel of the same name and tells the real life story of a group of scouts named "Szare Szeregi" during the Nazi occupation of Warsaw and the liberation of one of their members (imprisoned and tortured by the Germans). During the day, under the enemy's nose, they engage in a unique military operation called "Operation at Arsenal" during World War II, The greatest achievement achieved by a youth resistance organization throughout occupied Europe.