Partisans Julia, Pavel and Sergey went to perform a combat mission, their party was surrounded and annihilated by chasteners. Many years passed and in the 50s the investigation agencies found a document which indicated that the group was annihilated because of betrayal of one person who survived. Julia was sure that her friends were innocent however Pavel started to suspect Sergey. The latter felt aggrieved. Pavel was tormented with remorse and made his apologies. During the investigation it became clear who was the real traitor. The comrades-in-arms regained each other's trust. Source : www.mosfilm.ru