Poor college student Wen Qing enters a room by mistake while raising money for her mother’s medical bills and spends one night with Haicheng’s richest man Li Hanci. Grandma Li takes her as her granddaughter‑in‑law. Li Hanci rescues her from her abusive father, and the two enter a contract‑based flash marriage. Misunderstandings arise over her father’s reckless spending. Learning she works while pregnant, Li Hanci is filled with remorse and stands by her after clearing up the confusion. At college, Wen Qing faces repeated bullying and frame‑ups, and Li Hanci fiercely protects her. Later, her true identity as the long‑lost real daughter of the wealthy Liu family comes out. With all feuds settled, they tear up the contract and tie the knot in a grand wedding for a happy life together.