The play tells the story of the perfectionist and fussy forensic scientist Bai Fan and the prosecutor Eunze, who has a super image memory, jointly investigate the case. Jeong Jae-yong will play the role of Bai Fan, a forensic doctor who has worked at the National Institute of Scientific Research for 10 years. Although he is recognized as a powerful faction, he is a genius and weirdo with indifferent personality and obsessed with invisible truth. Jeong Yoomi will play the role of Eun Sul, the prosecutor of the Seoul Eastern District Prosecutor\’s Office. A person who was born with a unique experience and a unique feeling from the \”gold spoon\” is a prosecutor who finds out the truth through the \”truth\”. Li Yigeng plays the role of a hot-blooded detective + playboy Jiang Dongyun.