Jimmy 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, however, the poison transforms him into a child instead of killing him. Adopting the pseudonym Conan Edogawa and keeping his true identity a secret, Kudo lives with his childhood friend Rachel Moore and her father Richard, 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 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. While he continues to dig deeper into the Black Organization, he frequently interacts with a variety of characters, including his professor friend Dr. Agasa, Rachel's friend Serena, a fellow teenage detective Harley Hartwell, Jimmy's parents, and many other characters.
Jimmy 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…