The story follows the adventures of Shinichi Kudo (also known as Jimmy Kudo in Case Closed), a young detective prodigy who was inadvertently shrunk into a child's body due to a poison he was force-fed by members of a criminal syndicate. Neighbor and family friend Professor Agasa strongly suggested Shinichi hide his identity to prevent them from killing him and the people he cares about, so Shinichi takes the name Conan Edogawa. He goes to live with his childhood friend Ran Mouri and her father, Kogoro, and tries to use Kogoro's detective agency as a way to find the people who shrank him—without letting Ran figure out who he really is.