An American pilot escapes from a POW camp and links up with Yugoslav partisans. He’s about to head back to Allied lines when he learns that the Partisans are plotting to assassinate the camp commander. He joins in the plot, aiming for revenge.

The war is over, and a group of young Partisans returns to their town to continue their interrupted education. They are doing everything in their way, because they are young enough to go to school and to horse around, but mature enough to react to lies and injustice. Loud, ready to fight, they are a problem in school, in youth organization, in town's command. And when they get used to normal life, one of them gets killed by Chetnik renegades' ambush. The comrades wear their uniforms again, take their weapons and succeed in revenging their comrade. When they return to school again, they are determined to pass the maturity test as well...