Lin Wanxing, the daughter of Jinghai's richest man, suffers from childhood trauma that makes her unable to tolerate contact with human skin. She can only rely on a 'robot bodyguard' who stays by her side to protect her. But no one knows that this expressionless 'robot,' who eats with her and takes bullets for her, is actually a master of Bajiquan hiding his identity. He conceals his extraordinary martial arts skills and willingly pretends to be a machine until he takes a fatal blade meant for her, splashing blood across her face. But how can a robot bleed? His identity is exposed, deadly plots begin to unfold, and an even greater conspiracy slowly comes to light. With nothing but his fists, he will smash through every shadow of darkness for her.