"The knowledge held by the Song family is incredibly profound, capable of deciphering the mysteries of the world. Yet, their mastery has attracted the envy of supernatural beings. Hence, it is believed that any member of the Song family who becomes an official, a constable, or a forensic investigator is destined for an unfortunate end." The toy bear, Xiao Tao, who resides near their home, discovers Song Yang's exceptional talent while investigating a case. Xiao Tao believes that such a talented individual should not waste their potential outside the police force and becomes determined to recruit him as a forensic investigator.

After discussing this matter with Commissioner Sun, he informs Xiao Tao that it is impossible for Song Yang to join the police force due to the ancestral prohibition in the Song family against pursuing a career in forensic investigation. Xiao Tao tries various methods to persuade Song Yang but fails to change his mind. Disappointed, she returns home and encounters a person holding balloons on her way. As Xiao Tao awakens, she finds herself in an abandoned circus site, where several people are suspended and bound.

These individuals were captured by Ah Gui, the clown. He explains to Xiao Tao that all of them are criminals, and she was brought here to await someone. With the help of Song Xingchen, the Knife God's true identity is discovered, and Song Yang locates Ah Gui's whereabouts. In the moments before falling off a building, Ah Gui reveals the identity of his grandfather's killer. It is the Knife God, seeking revenge. But why does he want to exact revenge on the Song family? To unravel the mystery, we must delve into his background.

The Knife God, originally surnamed Song, killed Song Yang's grandfather and left behind Song Yang, which fueled his determination to uncover his grandfather's cause of death. The previous police report stated that his grandfather's death was likely caused by a sharp weapon, resulting in cardiac arrest. However, no external wounds were found on the body, and there were no signs of binding or struggle, nor any traces of poisoning. Commissioner Sun informs Song Yang that Ah Gui did not die from the fall but was stabbed by a sharp weapon. Now, it remains to be seen if Song Yang can unravel the mysteries of the Knife God's actions.

"#Lie Zui Zhe#"