On a shopping trip to the capital, Kujo accidentally stumbles into an apparent criminal operation at the Jeantan department store that involves a terrified girl in the basement. But when he returns with Inspector Grevil, nothing is as he remembers it.

When the love of Inspector Grevil's life, Jacqueline, visits the academy, Victorique tells a tale of the past in which she helped Grevil save Jacqueline from an accusation of murder—and demanded something from him in return.