In Daonv Village, the murder becomes a mystery. Who is the murderer? A mysterious murder case brings Yan Ling and Shen Yanyu together. They work together to solve the case and become in love for a long time. . . Yan Ling: He was originally a second-generation official, but was driven to practice by the elderly at home. He has good skills but low "IQ". Shen Yanyu: As the heir to a hidden family, he is strong, has a high IQ, and has first-rate crime-solving abilities. He was assigned to practice.