Chen Choushi meets Wen Qian at a dental clinic, sparking a brief romance. He reveals that he can see a number above a girl’s head, representing the length of their relationship—and for them, it’s only seven days.

Tells the family story of an 85-year-old mother taking care of her 65-year-old daughter with Alzheimer's disease, using a delicate female perspective to show the infinite power of love and family at the end of life.