Girlie Days follows the up-and-downs of Fong Ching Fung. She marries Cheung Chi Keung at age 19 with her sister's daughter in tow. Her life revolves around her family, but after 20 years of marriage she finds out that her husband is in love with another woman. She files for divorce, loses her job, and her daughter leaves her. Her life falls apart and the story follows her inspirational journey to find herself again.