Unconquered City

Marko and Zdenka are a pair of young lovers in 1941 Zagreb. As they watch their friends, employers, family members become either collaborators or victims of the new Fascist regime, they turn towards Communsim.

The Ustasha begin rounding up Jews, Serbs, and Communists. The most notable ones are imprisoned in the Kerestinec castle. Meanwhile, the communists prepare for war.

As revenge for the deaths of their comrades, the communists begin killing off notable collaborators. In response, the Ustashe start killing the prisoners in Kerestinec. The resistance plots an escape plan which swiftly goes awry.

A young mechanic is tasked with figuring out how to sabotage the Zagreb general post office. Faced with a time crunch and the arrest of his comrade, he is left to his own devices.

The Germans are looking for Dr Ivo Ribar, a famous retired politician, planning to make him help them keep the peace among the people. However, not wanting to collaborate, Ribar is trying to escape and join his son in the Partisans.

Laufer and his group carry out a successful bombing of a factory and are now awaiting to join the partisans in the woods. However, when one of their members is arrested, they are all in danger of being exposed.