The curator, Mr. Kijima, is found unconscious inside the soundproofed "Silence Vault" just minutes after the opening ceremony. The vault was locked from the inside, and the only key was found in his pocket.
The episode takes place during a midnight dress rehearsal of a revival of The Phantom of the Opera at Haido City’s Grand Theatre. Conan Edogawa, accompanying Ran and Sonoko (whose family owns the theatre), witnesses the “accidental” collapse of a chandelier that narrowly misses lead actress Reiko Shirakawa. The subsequent investigation by Inspector Megure initially points toward a disgruntled understudy. However, unlike standard episodes where Conan identifies the culprit mid-way, Episode 1077.5 pivots: the sabotaged chandelier is revealed to be a false flag , orchestrated by the victim herself to frame a rival. The true murder occurs in the second half—a poisoning backstage that Conan fails to prevent, forcing him to solve a case haunted by his own inadequacy.
