Director: Svetomir Toma Janić
Cinematografpher: Miroljub Dikosavljević
Scenography: Veselin Badrov
Costume Designer: Helena Volfrat-Kojović
Music: Blanka Jelić
Editor: Blanka Jelić
Cast: Zoran Radmilović, Tatjana Salaj, Rejhan Demirdžić, Velimir Bata Živojinović, Stojan Aranđelović, Dušan Janićijević, Rastislav Jović, Antun Nalis, Aleksandar Stojković
Sarajevo is occupied by Axis forces. During a raid, Gestapo officers arrest two heating plant workers Predrag and Beli. Regional Gestapo commander Dr. Stal tortures Beli into identifying some members of an illegal organization that provides members of the guerilla movement with precise information about the movement of trains carrying German troops and military supplies. Predrag, who is one of the leaders of the illegal organization, remains stoic under torture and reveals nothing. Dr. Stal orders the execution of Beli and release of Predrag. In that way, he helps a traitor acquire the status of a hero and marks Predrag as a traitor. Convinced that he is a traitor, the heating plant workers greet Predrag with contempt and hate and start boycotting him. The illegal organization tasks a member of the resistance movement, Kosta, to investigate Predrag’s case, but that is a very risky and dangerous task because Predrag is under constant Gestapo surveillance. However, with the help of Vela and resistance movement member Bosko, Predrag achieves a major success – he captures Dr. Stal and forces him to tell the truth to the heating plant workers. Predrag is killed, but thanks to his sacrifice the heating plant workers no longer live in fear and with suspicion and their trust in the strength and morality of the illegal organization is restored.