Tokiko (Kinuyo Tanaka) is a typist and the girlfriend of a small-time gangster, Joji (Joji Oka). A student, Hiroshi (Kōji Mitsui), joins the gang. When Joji begins to fall for Hiroshi's sister, Kazuko (Sumiko Mizukubo), Tokiko decides to scare her rival away. However, Tokiko takes a liking to Kazuko and decides to reform. Joji throws Tokiko out, but she soon returns and convinces him to give up his life of crime.