The world's greatest detective, Ichipei Kuroda, has returned. This time, he was hired by a politician to search for his estranged daughter. When my daughter was found dead, the mystery deepened. At the same time, Tohiko Kuroda's assistant attempted to prevent her from getting married to a rural bumpkin and cohabiting with a composer who wrote symphonies on a calculator - and he did not touch a woman on the Tokyo train!