Kudo Shinichi received a challenge this evening, saying that his classmate would be kidnapped on a study trip, and that if Shinichi could not protect his classmate, he had to give up the title of "high school student detective". The new book was not interested in study travel, so the letter sent him to school the next day to join Xiaolan (Zhihua Kurokawa), Yuko Iwasaki (Yoshiko Iwasaki) and about 30 other students in the class. As soon as they boarded the travel ship, Shinichi Shinichi set his sights on acting head teacher Shengo Kitajima, tour guide Makayi Nishikawa, captain Toshio (Matsushita) and crew member Kyosuke Namada (Kazuhiko Nishimura). Always be vigilant. But the garden is still missing unnoticed. There is no clue to start the investigation, and he will answer the phone with the kidnapping notice.