Private detective Qi Mu is hired by a wealthy businessman’s widow to investigate the truth behind her husband’s death. The case appears to be a suicide, but it is riddled with doubts. Through a meticulous examination of the scene and sharp observation, Qi Mu discovers signs of murder hidden behind the apparent suicide. During the investigation, Qi Mu is attacked by a mysterious assailant and also learns that the deceased had secret connections to several business figures. A far greater conspiracy seems to lie behind the case.
