Midori (Misora), the adopted daughter of Kinnosuke (Kawamura), a ship carpenter in a port town, was born a good singer. Her mother is dead, her father has been missing since he left for war, and the orphan Midori is given to Kinnosuke and his wife, who soon have a baby together, so she is treated as an obstacle. When a female sword-play troupe comes to town, she cannot forget the kindness shown to her by female magician Katsutamusai Harue (Awashima), so she follows the troupe on their tours. Midori became a popular singer and was loved by the troupe, but only Yoshizawa (Abe), the leader of the troupe, had eyes for Midori and bullied her.