To escape the enemies targeting Fukiya, the death row prisoner they're guarding, the Boy Detectives' Club takes refuge in the abandoned building that Kobayashi had once been using as his base. They manage to hold their ground as they wait for a helicopter sent by Noro. In the meantime, Kobayashi has no choice but to play along with Fukiya's word association game, which causes his mental state to grow increasingly unstable. Meanwhile Hanasaki, after being accepted into Hide-chan's Red Beetle gang, learns of their involvement in the case and has to make a choice...
死刑囚を狙うグループに追われ、少年探偵団は小林が根城にしていた廃墟へと避難。野呂が寄こした脱出用のヘリが来るまでの間、何とか応戦することに。そのかたわら、死刑囚の蕗屋が仕掛け続ける連想ゲームに仕方なく答えていた小林は、次第に変調をきたす。一方、ひでちゃん率いるレッドビートルの一員として迎えられた花崎は、彼らが今回の事件に絡んでいることを知る。レッドビートルか少年探偵団か、花崎の心が揺れる。
Para escapar de los enemigos que apuntan a Fukiya, el prisionero condenado a muerte que están custodiando, el Club de Detectives de Niños se refugia en el edificio abandonado que Kobayashi había estado usando una vez como base. Se las arreglan para mantenerse firmes mientras esperan un helicóptero enviado por Noro.
범죄자 후키야 세이지는 호송되는 도중에도 과거에 대한 힌트를 늘어놓으며 코바야시를 도발한다. 살인자를 돕는 모양새가 된 코바야시 일행과 그 반대측에 사로잡힌 하나사키는 난항을 겪게 되는데...
