A man named Ryousuke Oomine threatens Kazuyoshi Onda, the president of a game company, to pay his game designer the money he deserves. During the dispute, Oomine accidentally shoots Onda with a gun and leaves the crime scene. The next day, Ran and Sonoko take Conan out to an ice-cream parlor in the mall. Conan overhears Takagi and a police officer discuss the how a young girl has been kidnapped and held hostage by Oomine. Conan searches for the girl at the parking lot and frees her from Oomine's grasp. However, Oomine captures Conan and uses him as his hostage.