MPD Transportation Department (Part One) A mysterious man reminisces about a deceased woman named Aiko while staring at her last text message, blaming a group of people for her death and bending 100 yen coins with a hammer. The next day, Naeko Miike also thinks about her and Chiba when they were kids. She runs into Lieutenant Shiori Yagi of the Metropolitan Traffic police who invites her to go singing at the local karaoke lounge along with another traffic officer, Touko Momosaki, who is a skilled fighter. After singing for some time, the three ladies leave. Touko is approached by the same individual from the opening scene asking for help after claiming to have heard a girl scream at a nearby park. When Touko investigates, the man attacks her but fails, then stuns and brutally bludgeons her to death with a metal bat. The discovery of her body launches an investigation where Conan points out that Touko was pointing in the direction of a swing set next to a “no parking” sign. Shiori and Naeko are called to for interrogation, but when Shiori sees the swing set, she remembers something, but leaves without saying anything.