Kogoro is asked to open the Tokyo Spirits versus Ganba Osaka game, so he brings Conan and his friends with him to the stadium. However, Kogoro becomes a laughingstock when he becomes sick during the opening ceremony. Afterwards, a doctor diagnoses him with diarrhea, which Conan believes was caused by the sports drink Kogoro drank. Apparently the drink was meant for Tokyo Spirits player Akagi. When Conan and Haibara examine the bottle Kogoro drank out of, they make a surprising discovery, but...

Conan and his friends visit a campground with their assistant homeroom teacher Wakasa where they meet Shiraami University basketball team members Ashizawa, Urushibara, Danno, and Midori. Danno is the former ace whose eye was damaged when Urushibara hit him with his elbow during practice. Urushibara gets into an argument with Danno and Ashizawa, creating an awkward atmosphere. The sullen Urushibara says he's going to drink and go to sleep and heads to his tent alone. Danno, Ashizawa, and Midori each take turns going to get Urushibara, but he refuses to come out. Later, Genta notices Urushibara's tent burning...