Later, Conan transferred to Didan Primary School and got to know Bumei, Yan Guang and Thai. One day, the star Yoko came to the Maori detective office and said that she always felt that someone was watching her. In order to further understand the truth, Maori and his party came to Yoko's residence. When they opened the door, they found a body lying opposite the door. During this period, Conan found the earrings of another actor, Yoko, and noticed that Yoko Yamanaka, Yoko Yamanaka and Yoko Yamanaka's agents had strange expressions. Then Conan stunned Kogoro with an ashtray and turned the voice changer to an adult voice for reasoning.
Because it is not convenient to solve the case, Agasa Hiroshi invented the watch-type anesthesia gun for him. Conan used these props to "replace" Kogoro (or Serena Sebastian) for reasoning, solved the mystery, and made Kogoro, who was originally unknown, famous at one fell swoop, and got the title of "Sleeping Kogoro". At the same time, Conan has been eager to trace the organization.