Yoshiyama Kazuko is a third-year junior high school student. One day while cleaning the lab, she smells lavender and faints. From then on, she has the power to travel through time.

A husband and wife are on the road doing a traveling BDSM show at various seedy locations. The wife is getting bored with the show and wants to quit. But while on tour in Kyoto a wealthy man and his proper looking wife invite them to do a private show. Little do they know that their stage routine is just child’s play compared to what the couple have in mind for them.

Obayashi's take on the famous Kosuke Kindaichi series, made popular partly thanks to the numerous movie-adaptions by Kon Ichikawa, the most known being The Inugami Family. Kosuke Kindaichi is the most famous detective in Japan. Kindaichi gets a new case to figure out who has beheaded a valuable statue and made off with its head.