But Kid, who wants to make use of him, uses a magical trick to forcibly drag him to Singapore. Conan, who doesn't have a passport and can't travel overseas, was supposed to stay at home. In the meantime, Ran and Sonoko have come to Singapore to see a karate tournament held there. A bloody Kaitou Kid announcement card is found in the crime scene. A local millionaire plots to retrieve it, and when it's exhibited in an exhibition at the Singaporean Marina Sands hotel, a murder takes place. The world's greatest blue sapphire, the 'blue lapis fist', said to have sunk in a pirate ship in the late 19th century, on the coasts of Singapore.