The famous Japanese shipbuilding company Yashiro Shokai designed and built its first luxury cruise ship, the Aphrodite. To celebrate the maiden voyage of the cruise ship, Yashiro Shokai invited celebrities from all walks of life to attend, from the prime minister to the wealthy. Suzuki Sonoko's parents were also invited. Due to the schedule, the Suzuki couple could not attend, so Sonoko invited a group of friends including Maori Kogoro, Xiaolan, Conan, etc. to go with them. With blue sky and white clouds, fine wine and delicious food, everyone was intoxicated by this wonderful vacation. However, this is destined to be an unusual voyage. First, Sonoko was suddenly kidnapped, and then the female president of Yashiro Shokai, Takae, was killed. At the same time, the chairman Yashiro Entaro also mysteriously disappeared from the ship. Not long ago, Takae's husband, Yashiro Hideto, had a heart attack while driving and rushed down the cliff. This series of deaths and disappearances seems to be related to the sinking of the Yashiro Shokai 15 years ago. Under the layers of reasoning and investigation, the hidden secrets gradually surfaced...