Seventy-year-old old man Zhao Tieshan drives a tractor carrying local goods into the city to acknowledge his relatives, but is despised by his daughter-in-law for being shabby, and acquiesced by his son to hide in the janitor's closet. No one knows that this old man, treated as a poor driver, is actually the founder of Beichen who has been in hiding for many years. He secretly investigates the group's ills and seizure of power conspiracy, and also faces his family's estrangement again. In the end, he stands shoulder to shoulder with his son to guard the enterprise and family affection, handing the future over to the next generation.