In a residential building, the body of a middle-aged man was discovered.
Detective Zheng Qingyu, with her highly sensitive talent, cooperated with her partner Wu Tao to launch an investigation.
The case quickly reached a deadlock. He is a diligent and good employee, a gentle and considerate husband, and a good old man with a calm personality.
No matter how they searched, no suspect appeared in Qingyu and Wu Tao's sight.
However, a key piece of evidence has been leading Qingyu towards the truth.
Finally, a shocking secret from 20 years ago surfaced.
