Conan, the Detective Boys, and their assistant homeroom teacher Wakasa discover a ten year old skeleton in the basement of the old school storage shed. They begin attempting to crack the code written on the headband the skeleton was holding in its hand. The class schedule Ayumi found in the storage shed is the key to the code, which is related to a ten year old case in which four thieves stole 200 million yen worth of gold ingots from a wealthy man's home. The skeleton belonged to the boss of the thieves. Conan cracks the code and comes up with a plan to catch the other three thieves who are coming for their shares.
Elenco: Minami Takayama , Kappei Yamaguchi , Wakana Yamazaki , Akira Kamiya , Rikiya Koyama , Megumi Hayashibara , Kenichi Ogata , Ikue Otani , Wataru Takagi , Chafurin , Yukiko Iwai , Kotono Mitsuishi , Kikuko Inoue , Fumihiko Tachiki , Hideyuki Tanaka , Kenichi Ogata , Sumi Shimamoto , Unsho Ishizuka , Yukiko Iwai , Yukitoshi Hori , Yuko Miyamura , Wakana Yamazaki , Kappei Yamaguchi , Minami Takayama , Akira Kamiya , Rikiya Koyama , Ryotaro Okiayu , Ai Orikasa , Atsuko Yuya , Hiroyuki Kinoshita , Asako Dodo .