Su Yunxi, an orphan girl from the countryside, gave birth to a daughter after a night with Gu Nanchen, the wealthiest man in Dragon City. However, the village chief forced her to marry his mentally challenged son, and her daughter was stolen and raised under a false identity. Five years later, she came to the Gu family as a maid while searching for her child, only to find that the young lady she cared for was her biological daughter. After numerous hardships including leukemia matching, identity revelation and obstruction from the Song family, Su Yunxi finally reunites with her daughter and finds happiness with Gu Nanchen.
