Set in the Republican era, this drama follows Wan Xin, a spirited village girl who enters the wealthy Wu household as a maid, believed to bring good fortune to the frail young master, Wu Hui Xiang. Though she begins at the bottom of the social ladder, Wan Xin's wit and resourcefulness quickly earn her the respect of the family matriarch.

As she navigates the complexities of the household, Wan Xin becomes an unlikely protector of the Wu family, standing firm against scheming relatives and opportunistic heirs determined to seize power. Through courage and intelligence, she not only changes her own fate but also safeguards the family she has come to serve.