Jimmy Kudo (Japanese name: Shinichi Kudo) is a high school detective who sometimes works with the police to solve cases. During an investigation, he is attacked by members of a crime syndicate known as the Black Organization. They force him to ingest an experimental poison, but instead of killing him, the poison transforms him into a child. Adopting the pseudonym Conan Edogawa and keeping his true identity a secret, Kudo lives with his childhood friend Rachel Moore (Ran Mori) and her father Richard (Kogoro Mori), who is a private detective. Throughout the series, he tags along on Richard's cases, but when he is able to solve one, he uses a tranquilizer needle to put Richard to sleep, and impersonates his voice using a voice changer to reveal the solution to the case. He also enrolls in a local elementary school where he makes friends with a group of classmates who form their own Junior Detective club (Detective Boys). While he continues to dig deeper into the Black Organization, he frequently interacts with a variety of characters, including his professor friend Dr. Agasa, Ran's friend Serena Sebastian (Sonoko Suzuki), a fellow teenage detective Harley Hartwell (Heiji Hattori), various police detectives from different regions, and Kaito Kid.