In modern day China, two women strive to preserve Nushu, an ancient secret language which bonded generations of Chinese women together through centuries of oppression in a clandestine support system of sisterhood and survival.

Hardly could anybody tell that 87 years old Lou has had Alzheimer’s disease. Over the years, Lou has forgotten almost everyone but firmly believes that 88 years old Feng is the one she is going to spend the rest of her life with.