The rich villager Yuftalana discovers that someone has broken corn from the cornfield. By chance he sees the thief - a child of a poor man. Blinded by rage, Yuftalana kills him with a stone...

The Bulgarian intelligence service has information that the top agent Peron is to arrive in Bulgaria. The higher official of the counter intelligence Ivan with an alias Y 17 is to investigate. Peron has to meet his local contact, the former ship captain Rudnev. The young Mina is accommodated in Rudnev's home. Rudnev figures that she is counterintelligence and agrees to cooperate with the task force. Soon after, Peron meets Mina and an eccentric engineer, fired from the job. The young man is the deep undercover agent Y 117. Peron tests the man. He tells him that Mina is an agent of the Bulgarian counterintelligence, and gives him a gun to kill her. Y 117 shoots Mina but the bullet was a blank. After that Y 117 should leave the country with Peron.

In a large provincial town, two friends Nasko and Raycho meet Emil, a conductor in the opera, who introduces them to Ana, an opera singer. Nasko and Ana fall in love. Nasko has to write a story for the newspaper about the irregular enrollment in college of Aneliya, the daughter of the local bigwig. A well-known director arrives from the capital for an opera premiere and makes advances to Ana. Aneliya comes to demand an explanation in Nasko's home. Ana finds her there and decides to take her revenge on him. She becomes intimate with the director. The story about the Aneliya case is ready, but as desk editor is drunk, Nasko fakes his OK signature. He sham is discovered. The relationships between the erstwhile friends are marred by insincerity, falsehood, tacit intrigues. Nasko plucks up courage to tell his friends the truth. In this way, he wins back Ana's love and he boy's trust.

A discovery complicates the relations in a family.

During Second World War a beautiful love between two young people burns out against the background of the Nazi reality.