Ryu was at the hosiptal doing his check up and was told that he fainted due to lack of sugar and sleep deprivation. At the same time, his PET brain scan showed huge exhaustion espec section relying on intuition. The doctor informed Ryu's brain may continue to display unpredicatable abnormal changes subsequently.
As Ryu was leaving the hospital with his assistant, Ryu suddenly stopped and told her to return first. He turned and appeared to chase after the senior doctor that passed him. Along the way, he bumped into a young doctor along the stairways and before he knew it, Ryu was locked down in a restricted section.
科警研で倒れ、帝王大王病院に運び込まれた九十九。そこで外科教授の日向が殺害される事件が発生。だが犯行現場となった備品倉庫前を映していた監視カメラには犯人はおろか、出入り口が一つしかない扉が独りでに開く映像が映っていた。林田は透明人間の仕業だと思い込み、その説に興味を持った九十九は舟木の協力を得て検証に乗り出す。そんな中、事件に関する証言をしようとした研修医のめぐみが“透明人間”に襲われてしまう。
某大學醫院內發生了殺人事件，負責調查的丹原和林田查看了院內的監控器，但是犯罪現場卻沒能留下疑犯的身影。正當他們困惑的時候，九十九來到醫院，他對這起透明人事件非常感興趣。案發時，醫生和久井等不少相關人員都在現場，九十九開始從科學視點驗證此事，此時，透明人再次出手，襲擊了和久井的未婚妻後藤……
