Su Qingyuan, the legitimate daughter of the Su family, and her half-sister Su Qingyao both revive carrying the memories of their past lives. Su Qingyuan wishes to avoid the Wen family's calamity and urges her sister to let go of her obsession. However, Su Qingyao is convinced that Wen Jingran is her destiny, regards her elder sister as an obstacle, and deliberately snatches the engagement. During the flower viewing banquet, conflict erupts, and she frames Su Qingyuan, causing her to be imprisoned in a cold courtyard. Heir Xie Heng sees through the conspiracy and silently protects Su Qingyuan. On the day of the wedding ceremony, the truth comes to light, Su Qingyao's sweet dream shatters, and the two sisters walk toward completely different endings.