Conan Edogawa sets out to apprehend Lupin the Third, the suspect of stealing a jewel called Cherry Sapphire.
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. 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.
After a sudden explosion at Edge of Ocean island in Tokyo, Tōru Amuro, codename Zero, begins to investigate. Meanwhile, private eye Kogorō is arrested as a suspect, so Conan Edogawa conducts his own investigation to prove his innocence, but Amuro stands in his way.
