This is a Democratic Peopleās Republic of Korea and Union of Soviet Socialist Republics co-production. This film is set during World War II, and is about a female Russian soldier named Masha. She is on a mission to discover a secret Japanese base in Korea. Everybody who accompanies her on the mission shortly dies, and sheās forced to stay with a local fisherman. She is trying to get the information about the base location back to the Russian army, because if she doesnāt, the Japanese will unleash the āSakura Planā, which is an all-out biological warfare assualt on the world.