主人公・湯浅（本名・柴井）はある大きな仕事中に何者かに眠らされてしまう。目が覚めるとそこは大きなダクトの中。落ちたら最後という状況の中、男女8人によるデスゲームが始まった！ 優秀なエンジニアなら謎が解けるというが、実は湯浅は技術者のフリをした詐欺師。間違えられた男は生きて脱出できるのか！
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