The events unfold on the cruiser "Svetlana", one of the Russian ships that participated in the fighting of the Russo-Japanese war. The cruiser is attacked. After the fire is over, the crew decides to flood the ship so that it does not get to the enemy. Only five sailors can survive. They arrive on Korean land and are sent to the Russian territory, on the way they face various dangers.

Mr. Komak, a musician from one foreign power, and Ra Sol Ju, Navy communicator of DPRK, who also does have a sense of music, met twice. First, on the Korean War, where she captured him, and then at the Festival of Youth and Students in Berlin. Many years later, Komak is coming to the festival in Pyongyang, with hope to find her.