An actress who is stuck in a bottleneck period, a lonely old man in Beijing Hutong. A naughty child raised by his grandmother, a failed middle-aged man. These four people, who are from Beijing, left behind, divorced, and widowed, are forced to form a temporary complete family because of a scam. Since then, a tragicomedy of human beings with chaos, laughter and tears has been staged. They are trapped between ideals and reality, struggling between hope and loneliness. In this temporary family relationship, they look back at their true blood relationship. And behind the laughter, how many unknown sad pasts are there...