While riding a monorail to the bay coast, Conan and Kogoro witness another rider being shot and injured by a sniper. The monorail makes an emergency stop, and the two of them track down the culprit, eventually arriving at the apartment believed to be the shooting location. They don't find the culprit there, but a forensics team determines that the shot was indeed fired from that room, which is also the scene of another murder. However, the bullet extracted from the victim at the hospital is a Tokarev cartridge not suitable for sniping...

A passenger on the monorail Conan and Kogoro are riding is shot and injured. Their pursuit of the culprit leads them to an apartment, but the culprit they discover there has fled to Toto Market. At the market they find a bound and gagged employee. The culprit stole the employee's possessions and is up to something...

Conan, Ran, and Sonoko visit the Ancient Oriental Culture Museum. The objects on display are replicas at this handmade museum. Ran and Sonoko are apparently here for the Egyptian god keychains that are currently popular among high school girls. Conan looks for a way to pass the time while they're engrossed in keychains...

En medio de una cena lujosa, la liga juvenil de detectives presencia a través de una cortina una escena de violencia, al intentar verificarla, encuentran que esa escena era imposible. Conan, quien no estaba presente, deberá encontrar el sentido de su testimonio para averiguar la verdad detrás de un horrible crimen.