Nakajima Takako visits the Mori Detective Agency and explains that her husband is missing. She lost contact with him three days ago, and the police aren't taking her concerns seriously. Conan and Kogoro begin examining the husband's personal effects they received from Takako. Among his belongings are photos from their honeymoon, of her husband diving with his coworker and a ship's captain, and her husband posing with his younger brother in front of their parents' home. They find nothing remarkable on the husband's computer, so they visit his workplace, but...