Qi Si Zhe is Licheng Police's youngest forensic medical examiner. He discovers that there may have been a hidden figure pulling the strings that led to a car crash that killed his girlfriend, Yu Fei, and decides to join He Cheng’s major crimes unit to continue his investigations.While there, he gets involved in mysterious and strange cases -a body wrapped in cobwebs and a missing body that ends up in the formalin sink in his lab, among others. Together with detectives Zhu Qing Yue and Han Feng, he gets closer to the truth behind Yu Fei's death, and everything seems to be pointing to the deadly drug ‘original diamond’.(Source: Chinese = Youku || Translation = MyDramaList)