Conan's group participates in a mystery-solving game aboard a luxury train. However, the Black Organization discovers that Sherry (Haibara) is on board. Gin, Vermouth, and Bourbon (who is disguised at the time) conspire to capture or eliminate Haibara. Thanks to the assistance of Conan, Kaito Kid (disguised as Shiho), and Shuichi Akai, Haibara successfully deceives the Organization into believing that Sherry perished in a train car explosion.