Song Jin accidentally traveled into a book, becoming a female supporting character with a tragic end in the story. The original owner was lost in her youth, and after being found, her family planned to arrange a marriage engagement for her with Zhou Yuan. Unwilling to walk the tragic old path again, Song Jin chose to form a cooperative alliance with Fu Zhouye. As they spent time together, the outwardly cold yet inwardly warm Fu Zhouye gradually grew fond of her. At the engagement banquet, Song Jin decisively broke off the engagement, punctured her sister's hypocritical face, reversed her fate through her own efforts, and also gained this arrogant young man's unique protection and partiality.