Lord El-Melloi, an instructor at an English magic academy, discovers someone is trying to kill him, and enlists the help of his students to find out who.

Waver Velvet, who fought with Iskandar during the Fourth Holy Grail War, receives a visit from Reines El-Melloi Archisorte and Melvin Weins. Reines asks Waver to help her with something in payment of the debt.

Melvin and Reines raise the difficult issue of a former student of Lord El-Melloi II, Gray and Lord El-Melloi going to visit the estate of the former student's family.

Waver investigates why his favourite tearoom has closed and learns a magical creature damaged their electrical system and is siphoning electricity. When he doesn't return, Gray, Flat and Svin follow his trail into the city sewers.

Primary Lecturer Wills is an expert in the Spiritual Evocation division; Lord El-Melloi II seeks aid from Spiritual Evocation to participate in the Holy Grail War.

A new victim turns up as the investigation in Marburry Workshop continues. Lord El-Melloi II and Hishiri Adashino are in disagreements once again.