Inspired by Sir Arthur Conan Doyle's classic literary characters, the series follows Dr. Wato-san Tachibana and Sara Shelly "Sherlock" Futaba, an eccentric police consultant who uses deduction to solve strange cases in modern-day Japan.

A dying old man named Shomantei has one last request. It is a different one. He would like to see the vagina of a young and pretty virgin. The family scrambles to fulfill his wish, but soon...