The movie consists of four stories. A couple in love adopts a cat named Xiao Ai. What will Xiao Ai do after breaking up? The second cat is the stray Xiao Fu. A man who is separated from his family and unemployed meets Xiao Fu, and they become each other's support. The third cat is a cat named Xiu Yan. Xiu Jing, an only child, has friends who all have pets. She returns to an empty home every day, but her mother says that cats are not allowed at home. The fourth cat is the story of Shun Zi. The grandfather who suffers from Alzheimer's disease does not welcome uninvited guests at home at all, but the constant soft calls outside the door, my Shun Zi is back...