While on their way to go shopping, Conan and the Detective Boys hear a man scream. They head towards the sound, which brings them to a tanning salon. Inside the building is salon employee Tsunoda Yasuo, who informs them that there is a dead body in the third room from the back. They head down the dark hallway and find the body of Nishitani Shin inside a tanning machine. He is a bodybuilder with tanning gel rubbed all over his body in order to achieve an even tan. The police arrive, and according to their investigation, the gel was poisoned...