古畑より自分の方が推理力があると愚痴る今泉。桑原に「夜食の弁当を食べた犯人を見つけて欲しい」と頼まれるが…。
Shintaro announces that he has better deductive skills than Furuhata so Kuwabara challenges him to find out who ate the contents of his bento box.
