Lin Bin, the former chairman of Lin Group, disappears mysteriously after a car accident, leaving his family searching desperately for him for twenty years. One day, a cleaner named Chen Qiang comes to their attention, and they discover that the person they have been searching for has been right beside them all along. Having lost his memory, Chen Qiang relies on his adopted daughter, Chen Sitian, and the two depend on each other for survival. Just as his daughter is about to become a permanent employee of Lin Group, the group's second young master, Lin Wu, sets his sights on them and abuses his power to bully them. Everything changes when Chen Qiang regains his memory and discovers that he is none other than Lin Group's former chairman and Lin Wu's biological father. The moment Lin Wu learns the truth, he is consumed by regret.