It tells the story of Cheng Rui, the richest man in Jiangcheng City, who turns into a delivery boy in order to find out the truth behind the black hole in the public welfare fund. He works undercover at the "Food Man" restaurant that delivers meals to schools. During the investigation, he falls in love with the female owner of the restaurant, Hao Jiamei, for a long time. It begins a love story full of healing and joy.