Mikoto Misumi is a pathologist at UDI (Unnatural Death Investigation) Lab. She can't stand neglecting unnatural deaths and believes there must be a truth behind the deaths. Team members that work with her are autopsy doctor Kai Nakado, recorder Rokuro Kube, clinical test technologist Yuko Shoji and UDI director Yasuo Kamikura.

They work on unnatural death cases and try to reveal the truth behind the deaths.

佐仓七濑（上白石萌音饰）因偶然发生的事情与命中注定的医生相遇，并坠入爱河。5年后成为护士的她如愿以偿与医生重逢，憧憬的医生天堂浬（佐藤健饰）却与想象中的人完全不同，是名被人称为“魔王”的毒舌超抖S医生。