1-5 years ago, Daiichi Yachiyo Maru was crashed into a large dip from the Pacific Ocean that was northern, and sank. The captain and a crew were also died. Now, in Nishitama, a ship designer died in a traffic accident, and of Yatsushiro ship builder, that belonged to Yatsushiro Financial Combine, was suffered from a hart attack while he had been driving. Six months has passed since then. Conan, Ran, and Kogoro are currently appreciating their trip. The Aphrodite is a luxury liner, and it's sailing as its maiden voyage to its Pacific Ocean. But, is a individual that is questionable, and a murder does occur. It's the launch of a dreadful plot happened in the sea at which there is no place to escape from.