Conan 303: The Invisible Prisoner Story Synopses: Conan and his assistant, Kogoro, investigated a missing person case together. The main character of the case was a police officer named Hidesuke Hondo, who went missing during a patrol. Conan and Kogoro searched the nearby area together but found no clues. During the investigation, Conan discovered a secret organization called the Dark Organization. They have been carrying out some mysterious activities. One of the members of the organization was a criminal suspect named Borben. He used to be Conan's classmate and had now become a police officer. Bobben revealed the truth of the case to Conan and Kogoro. It turned out that he was a victim of an organization's kidnapping. The organization asked him to tell them an important piece of information, but he was rejected. The organization kidnapped him and made him participate in the missing persons case to gain his trust. Conan and Kogoro decided to track down the organization's secret hideout and bring all the members of the organization to justice. In the end, Conan successfully exposed the conspiracy of the Dark Organization and protected Kogoro and his assistant.