Após a segunda guerra, nas favelas de Tóquio, algumas prostitutas adotam um código estrito de conduta.
Tajima is a private detective in charge of his own company, Detective Bureau 2-3. When warring criminal gangs go overboard by robbing U.S. military munitions, Tajima steps in to stop what the cops can't.
Set in Kawaguchi in the early 60s, this simple story chronicles the lives of foundry families and one girl's dreams of higher education.