The body of Shiraami University basketball team member Urushibara is found inside a burning tent. When Conan examines the interior, his attention is drawn to the single bamboo skewer mixed in with the melted candle. Conan deduces it must have been used in some kind of trick and suspects the killer is among his classmates Midori, Ashizawa, and Danno. Inspector Yuminaga questions the three who visited Urushibara's tent and suspects Danno, the last to visit the tent, killed him. Later, with the help of a photo of the charred Urushibara's left hand and his playing friends, Conan identifies the killer's trick...