Conan and Kogoro pass by the desolate Bundo Shopping Arcade on a back street. They decide to shop at a grocery store they see called "Yaokyoshi," but the owner, Yoshinobu Yamazaki, seems to be in low spirits. Then Madame Gaga, a "producer who revitalizes run-down shopping arcades," and her assistant, Rabbit Suzuki, arrive on the scene.