Conan gets cornered on a ship where the past literally sinks back up to haunt everyone aboard. The mystery collapses into a two-suspect standoff that feels thin for the franchise, but the claustrophobia holds, water rising, nowhere left to run, and a killer who knows exactly how to use that. What saves it is the action: Conan and the crew fighting not just for the truth, but for their lives while the ship dies around them again.

Fifteen years ago, a cargo ship struck a large iceberg and sank. Six months ago, a ship designer at Yashiro Shipbuilder had a sudden heart attack at the wheel and died in a crash. Now Conan, Ran, Kogoro, Sonoko and the Detective Boys are enjoying a trip on the Aphrodite, a luxury liner built by the Yashiro Group, as it heads into the Pacific on its maiden voyage. A suspicious figure is on board, and before long a murder takes place. The killing marks the start of a revenge plot at sea, where no one can escape, and Conan works to uncover how the old sinking and the recent deaths are linked.