After retiring from the army, 46-year-old Shan Zifei runs the largest security company in the city. His only daughter Shan Dandan was admitted to the Department of Philosophy at the University of Hong Kong with excellent grades. Shan Zifei wanted to give his daughter a surprise, but when he arrived in Hong Kong, he unexpectedly found that his daughter was expelled from school for long-term absences and opened a red hotel. After scolding his daughter, he decided to take her back to the mainland to live. From then on, the 22 house rules of the Shan family were hung high in the bedroom, and Shan Dandan was like a bird in a cage. Shan Dandan and her grandmother formed a united front, and three generations staged a series of hilarious family confrontations.