The rowdiness of the classroom seems like how it usually is in Modern Magecraft Theories, but there is something wrong with Lord El-Melloi II's behavior. Luvia, who had come to visit and attend one of his lectures, asks Gray the reason why, and it turns out it's because his favorite tearoom has basically closed shop. Lord El-Melloi II heads to the tearoom to inquire on their circumstances as he realizes work just can't progress at this rate, but when he goes down into the sewer system to investigate, an ominous shadow attacks him. Gray, worried that he hasn't shown any signs of returning from the investigation, seeks help from Flat and Svin.

As the investigation in Marburry Workshop continues, lightning strikes yet again to create a new victim. Lord El-Melloi II and Hishiri Adashino once again are on opposing grounds concerning the perpetrator of this case. Lord El-Melloi II seeks the help of the Necromancer Kairi Shishigou to reinvestigate. Gray and Shishigou are assaulted by a fierce beast, the Black Dog, that suddenly appeared before them. Based on the fact that the Black Dog reacted to Gray's Mystic Code, Lord El-Melloi II elicits a certain conclusion. He then starts preparing for a ritual with the assistance of all Mages who were gathered at Marburry Workshop.

An incident occurs where Trisha Fellows is murdered by someone aboard the Rail Zeppelin. Lord El-Melloi II undertakes the investigation for the case, but Olga-Marie has doubts about his way of life as it is far from how a Mage should act. Meanwhile, Shishigou and Luvia, under Reines' orders, are conducting their own investigation. The Mystic Eyes Collection Train begins its procession once again, and a mysterious figure appears before Lord El-Melloi II and Gray. The assailant who descends upon the pair with overwhelming power is the materialization of a Heroic Spirit engraved into human history... A Servant.

Caules Forvedge is suddenly apprehended as the perpetrator. As Lord El-Melloi II causes the Mystic Eyes Auction to pause while disclosing his deductions, Reines, who is supposedly still in London, rushes over to his side. Thus, Lord El-Melloi II points out the name of the true perpetrator.