Su Yan, the secretary of the director of Linhe Public Security Bureau, participated in a competition TV program without permission from the leadership and won the championship with his partner Zhang Qiuyan. However, Zhang Qiuyan was murdered at home that night, leaving behind a mysterious "black ant" at the scene. As a result, Su Yan became a suspect and volunteered to join the criminal police team. Su Yan met Death
Su Yan, the secretary of the director of Linhe Public Security Bureau, participated in a competition TV program without permission from the leadership and won the championship with his partner Zhang Qiuyan. However, Zhang Qiuyan was murdered at home that night, leaving behind a mysterious "black ant" at the scene. As a result, Su Yan became a suspect and volunteered to join the criminal police team. Su Yan met Death