Ren Jiqing (Jackie Chan), an elderly landlord living with Alzheimer’s disease, mistakenly believes his financially struggling tenant, Zhong Bufan (Peng Yuchang), is his long-lost son. Together with neighbors including a property agent and a health supplement salesperson, they accidentally form a makeshift family. Through a series of humorous and heartfelt interactions, they gradually uncover the old man’s hidden secrets and build a deep emotional bond.