In his past life, Zhou Yan gave everything he had without limits, only to meet a tragic death. Reborn, he faces his girlfriend's demand that he give up his research supervisor promotion to her incompetent younger brother. Zhou Yan finally wakes up and throws down 87 boxes of empty stomach medicine before breaking up on the spot: "I'm done cleaning up this mess for you!" Given a second chance at life, he refuses to be manipulated by moral obligations. With his extraordinary mortise-and-tenon craftsmanship and CNC machining skills, he joins forces with a new business partner and rises through his own talent to become an industry leader! Meanwhile, his ex-girlfriend's family suffers the consequences of their own corner-cutting.