Intro. Kudo Shinichi, the genius high school detective with an IQ of 180, once witnessed a mysterious transaction by two members of the Black Organization, Gin and Vodka, while investigating at an amusement park. He was attacked and forced to take the poison APTX-4869, which caused his body to shrink into that of a 7-year-old child. To conceal his identity and investigate the Organization, Shinichi takes the name Edogawa Conan and lives with Ran and detective Kogoro Mori. Conan uses his deductive abilities and Professor Agasa's gadgets to solve cases while also tracking down clues about the Organization. He meets Haibara Ai, who is actually Shiho Miyano with an IQ of 175 :)), a former member who developed APTX-4869 and also shrank after fleeing the Organization. Conan, Haibara, and the Detective Boys constantly get entangled in various major and minor cases, repeatedly clashing with the Organization and Vermouth, Gin, and Vodka. Heiji Hattori learns Conan's true identity and becomes an important ally.