春野翔太朗（佐藤勝利）のベッドの下から、滝中良一（橋本淳）の遺体が発見される。だが下半身がなく手には翔太朗のスマホが……。刑事の工藤文世（池田鉄洋）は一緒に病室を抜け出した翔太朗を疑うが、滝中の誘いだったと主張。自分も何者かに殴られ気を失ったと訴える。工藤は今回の犯行と近頃起きている連続殺人事件との関連を疑っていて……。やがて滝中の下半身があまりにも残酷な状態で見つかり、病院内に衝撃が走る。
The body of Ryoichi Takinaka (Jun Hashimoto) is found under the bed of Shotaro Haruno (Katsuri Sato). However, there is no lower body and Shotaro's smartphone is in his hand... Detective Fumiyo Kudo (Tetsuhiro Ikeda) suspects Shotaro, who escaped from the hospital room with him, but claims that it was Takinaka's invitation. He also claims that he was beaten by someone and fainted. Kudo suspects that this crime is related to the recent serial murders... Before long, Takinaka's lower body is found in an extremely cruel state, and shock runs through the hospital.
