While on a hot springs trip, Kogoro is asked to investigate an incident from several years prior. One of the guests believes the suicide was actually murder!

Heiji and Kazuha make a surprise visit. Later at a restaurant, Heiji and Kazuha argue what they should attend tomorrow, a theatre or a baseball game. Mouri decides to let the solver of a murder to choose the event and everyone agrees. Mouri, Heiji, and Conan are against Ran and Kazuha.