Qi Guosheng, a retired teacher, has been widowed for many years. He always tries to look good in everything, but his three sons do not bring him any glory. The eldest son, Qi Tianzuo, is a Michelin three-star pastry chef. He has always been afraid of getting married because of his misunderstanding of his parents' marriage. Qi Tianyou, the second son and university teacher that Lao Qi was proud of, has divorced after a good life. The third son, Qi Tian, is also facing emotional difficulties. With the addition of the little grandson Qi Mowen, Lao Qi's house has become a proper boys' dormitory. Five men, including old and young, squeezed into one room. No one likes each other, and everyone looks at each other with a little disgust. The reality of the trivialities, the past of the old sesame and rotten grain, and the temper inherited from the old Qi family, make their life "smoke of war everywhere" and miserable. Although life is a mess, we still have to sing and move forward. There are roses and thorns on the road to "getting out of singleness", but nothing can stop the heart from pursuing a better life. The family stopped quarreling and making trouble, and finally moved towards happiness.