One day Pavel, a young man wounded in the war, suddenly shows up at the home of a Moscow scientist name Krymov and claims to be his illegitimate son. Krymov denies this, but out of compassion he helps arrange a necessary operation for Pavel. Then certain things begin happening which suggest to Krymov that he may have a psychologically unstable fellow on his hands.

May, 1945... A young pilot Aleksey Kaverin stationed in Germany is going home to Russia for vacation. The problem is he needs to bring a bride. And not only to himself but to four his friends as well.

The story of a young Oksana who became addicted to drugs, the story of her sister Pavla and neighbor Vasily - children who love Oksana and are ready to sacrifice everything to save her. The only thing they are able to counteract evil is their kindness and compassion, their masculinity and their desire to help a girl in trouble...