Near the anniversary of his mentor's death, Takagi, who has gone off on a secret road trip to investigate something, is kidnapped, forcing Conan, Sato and the others to find out where he's hidden.
The investigation into the murder of a publishing company president brings Ai into close proximity to Subaru Okiya, whom she suspects of being part of the Black Organization.
Conan, Ran, Sonoko, Masumi and Subaru examine two deaths from years ago where the symbol for "death" was found near the bodies and try to figure why Yusaku Kudo, who investigated the deaths, concluded that they weren't murders.
