After the war, a Yugoslav army captain, Vladimir, is in charge of suppressing armed supporters of the former king's regime, led by major Momir. After Vladimir's best friend is killed, he joins the rebels pretending to be one of the king's supporters. However, one of Momir's supporters, a man who harbors rebels, has an attractive daughter who is engaged to marry Momir. She knows that Vladimir is an officer of the Yugoslav army, because she has seen him wearing a Yugoslav uniform. Vladimir fears that she might betray him. Overtly handling the antagonisms between Tito's partisan fighters in World War II and the Chetniks who collaborated with the Germans, this routine action film by Mate Relja takes place just after the war. At that time, armed Chetnik forces were still waging their own guerrilla war, and in this story, a spy from Tito's army infiltrates one group of Chetniks. Once he gains their trust, he is able to work with the regular army to set a trap for the group and end their activities.