A group of former members of the Gestapo participates in espionage activities, helped by a group of locals, dissatisfied with the new authorities. However, members of the Yugoslav secret police, the infamous UDBA, are on their track. This is the first Yugoslavian spy film.
Instead of going to Belgrade, a boy called Mita joins illegal movement. Germans, who occupied Belgrade in the meantime, start to hunt down communists. Many of them are killed, but Mita succeeds to get to the freed land together with a girl who was going to Belgrade with him.
Political prisoners imprisoned in Yugoslavia will try to escape from prison by digging a channel under the ground and join the partisans.
