As it turns out, the evil priestess Yasuyo Niwano set up the entire situation along with the Arisato Construction Group in order to gain access to her temple's construction scroll hidden inside a giant safe, with her ultimate goal is to get her temple be declared as National Monument and gains fame and fortune from it. After she had lured Kaito to the exhibition with a fake jewel, Niwano transported Kaito and Aoko to her temple with a giant truck, end them in through the hidden passage way and had them work through the contructed puzzle rooms until they reached the safe room, believing it to be the way out. Unfortunately for Niwano, the scroll's content had long been destroyed thanks to various factors, rendering her entire scheme worthless. Kaito then flees the scene when Inspector Nakamori and Hakuba arrive, but not before leaving a voice record on Aoko's phone containing Niwano's voice which proves her intention to finish them off once the puzzles are solved.
Aftermath
Nonchalant Lupin
As a bonus, the volume included the 1987 one-shot manga Nonchalant Lupin (さりげなくルパン,Sarigenaku Rupan?), which was the prototype story for the Magic Kaito series. This story had previously been included in one version of Gosho Aoyama's Collection of Short Stories.
Plot
While sneaking around the school late at night searching for the answers to the final exam, Kaito Lupin stumbles across a list for "Illegally Accepted Students" for his school. To prevent a scandal from happening and to put Kaito in his place once and for all, Headmaster Tsubura teams up with the Gurikouji Financial Group's Kenzou Gurikouji. Gurikouji is currently being investigated by Aoko's father, Inspector Holmes, regarding the group's drug trafficking and gun smuggling. Tsubura and Gurikouji intend to trick Kaito's friend, Aoko Holmes, into believing Kaito might be expelled from school and blackmail her into marrying Gurikouji's son, Ken. By doing this, Gurikouji would gain control over police investigations and Tsubura would finally remove Lupin from the school. Aoko reluctantly agrees and it's up to Kaito to crash the wedding and steal her away somehow.
Characters
Kaito Lupin
High school student
Magician
Aoko Holmes
High school student
Detective club president
Inspector Holmes
Inspector
Aoko's father
Kenzou Gurikouji
Gurikouji Financial Group head
Ken's father
Ken Gurikouji
High school student
Kenzou's son
Headmaster Tsubura
Headmaster
Trivia
The route the truck takes and Saguru Hakuba re-creates thanks to the SNS messages in chapter 35 leads through a couple of real places:
He concludes that the next turn must be to Lake Sagami or Okutama, being correct with the latter, where Kaitou Kid and Aoko Nakamori are kept in a temple in the Okutama Mountains.
Konosuke Jii's "professor friend" who repaired Kaito Kuroba's bike is heavily implied to be Professor Hiroshi Agasa, being a rare case of a call-back from a Manga chapter to an Anime episode - to Blue Birthday of Magic Kaito 1412 in this case. This allusion is returned in File 997 of Detective Conan, where Agasa mentions that he lent his VW Beetle to his "barkeeper friend".
