The protagonist, a 28-year-old successful department store manager in modern South City who died in a truck accident and transmigrated into the body of a 15-year-old poor peasant girl with the same name in the Yong'an Dynasty. She is intelligent, resourceful, and determined. She discovered that her entire modern department store followed her into the past as a secret space. She agreed to marry into the poor Yan family in place of her stepsister on the condition of severing all ties with the Lu family.
