After graduating from detective school, Achao and Entaro received their certificates and launched a private detective agency. One night, while investigating Otoyo, the wife of a soba shop owner, the two went to the basement of a theater and unexpectedly stumbled upon the murder of model Ranko Nemoto. Using the earring she was wearing as a clue, they began their investigation.
| Actor | Role |
|---|---|
 Achako HanabishiNot listed | Not listed |
 Entatsu YokoyamaNot listed | Not listed |
 Norihei MikiNot listed | Not listed |
 Chiemi EriNot listed | Not listed |
| MMinoru AritaNot listed | Not listed |
| SSanta ArikiNot listed | Not listed |
| MMichiko MegumiNot listed | Not listed |
 Chieko SōmaNot listed | Not listed |
 Tony TaniNot listed | Not listed |
 Fuyuki MurakamiNot listed | Not listed |
 Zeko NakamuraNot listed | Not listed |
| MMitsuko SawamuraNot listed | Not listed |
| EEijiro SakauchiNot listed | Not listed |
| MMidori OkaNot listed | Not listed |
| MMichiko TsuyamaNot listed | Not listed |
| KKazumi HanabusaNot listed | Not listed |