Józef Cisowski, born in 1907, was a highly educated craftsman and owner of the "Żbik" File Factory in Krosno, one of the most modern locksmith workshops in the region. Cisowski was also a soldier in the Home Army – secret education was conducted at "Żbik," and despite the great risk, a grenade foundry operated there for Home Army units. Cisowski himself participated in their transport. The film also tells the story of the creation of the Craft Museum in Krosno.