Yoko introduced Conan, Ran, and Kogoro to a newscaster named Rena Mizunashi who has experiences persistent "doorbell" pranks. Conan planted a tracker to figure out the culprit, but after the case, the track gets stuck to Rena's shoe. Conan hears the same melody that he heard when Vermouth was calling the boss, and finds out that she's calling Gin. Rena Mizunashi is no other than Kir, a new member of the organization, and on top of that, Gin has recruited two new members named Chianti and Korn for an assassinaton! Conan must team up with the FBI to stop them.

A girl vanishes on her way to school, and the Detective Boys decide to investigate. Conan fears the arrival of a new Black Organization member.