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.

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.