Sera heads to the rental villa to meet a client with Conan, Ran, and Sonoko. On their way, Ran and Sonoko spot a woman dressed in red from head to toe. At the rental villa, Tamami, Sumika, Ninda, and Hakuya, members of a former high school outdoor club, had gathered. 15 years prior, a wife stabbed her husband to death at a nearby villa.