Perfectly preserving his original intelligence, he hides his real identity from everyone, including his childhood friend Ran Mouri and her father, private detective Kogorou Mouri. However, to his own astonishment, Shinichi lives to see another day, but now in the body of a seven-year-old child. Unfortunately, he is caught in the act, so the men dose him with an experimental drug formulated by their criminal organization, leaving him to his death. One day, when Shinichi spots two suspicious men and decides to follow them, he inadvertently becomes witness to a disturbing illegal activity. Shinichi Kudou, a high school student of astounding talent in detective work, is well known for having solved several challenging cases.