In 1937 Shanghai, a soldier meets a young woman under a bridge during a Japanese air raid. They vow to meet after the war ends, but they don't know each other's name or face. 10 years later, the woman, now a nightclub singer, takes in a naive country girl. The country girl falls in love with the would-be song-writer upstairs who, unbeknownst to the singer, is the soldier from the bridge.
