When a wrecked car with a dead body inside is dredged out of the bay, the STN-J finds itself embroiled in a bank robbery case involving 200 million yen. What initially seemed an open and shut case becomes morally ambiguous when not the remaining suspect Tazawa Tsuneo, but his preadolescent nephew Mamoru Kudō is revealed to be a powerful witch and thus their target.

A case of death by burning seems straightforward when a perfect match comes up on the STN-J database. The suspect has died leaving a note confessing to three murders, but two have yet to occur. When the second person on the list dies in the same manner as the first, is it a case of murder beyond the grave or a new facet of witchcraft?