In 1942, in Nazi-occupied Belgrade, locksmith and acrobat Dragoljub Aleksić wrote, produced, directed and starred in Nevinost bez zaštite, the first sound feature film made in Serbia. It is a thrilling action picture with musical numbers and prolonged sequences of Aleksić's acrobatic stunts. Nevinost bez zaštite was never released due to the Nazi censors. "Gentlemen, I assure you the entire Yugoslavian cinema came out of my navel. In fact, I have made certain inquiries, and I am in a position to state positively that the entire Bulgarian cinema came out of my navel as well."