Li Zhou is a private detective. One day, a client hires him to find her husband, who vanished without a trace a few days earlier.
Li Zhou begins investigating the case and discovers that the missing man's movements were shrouded in mystery. He showed no signs of anything unusual before he disappeared. Li Zhou gathers information about him and digs into his social circle, but gets nowhere.
As the investigation continues, Li Zhou gradually uncovers some suspicious details and begins digging into the missing man's secrets. At the same time, he realizes that his own safety is in danger, but he refuses to give up.
The deeper he investigates, the more the truth comes to light. The missing man did not simply leave home. Someone had harmed him. Yet the real culprit is hiding in plain sight, trapping Li Zhou and the others in a perilous situation.
In the end, Li Zhou finally uncovers the truth and brings the criminal to justice. The suspenseful case is closed.
