Primary Lecturer Wills is an authority in the Spiritual Evocation department. His father, Sir Trevor, owned the Marburry Workshop that utilizes an entire wastelands to operate as a Magical Workshop. However, the Workshop went out of control, causing many casualties including that of Sir Trevor himself, and has gotten out of hand. Lord El-Melloi II, seeking assistance from the Spiritual Evocation department in order to participate in the Holy Grail War, begrudgingly accepts the request to solve this case. However, what awaited the entourage who arrived at the mansion was Hishiri Adashino, a member of the Policies department that investigates and enforces rules within the Clock Tower...