In a certain port town, there is a group of young men called the Wakakusa-kai. The chairman Oda (Miki), member Ichiro Sonoda (Ishihama), his sister and music lover Keiko (Misora), Keiko's classmate Sachiko (Ota Chieko) and her brother Shoji (Yamada) meet enthusiastically to brighten the town and help themselves grow. Ichiro's family lives with his father and Keiko in a milk shop, but Keiko's desire to go to music school is unlikely to be fulfilled. Meanwhile, Shoji's father is trying to get Shoji and Keiko married.