Su Qinghe, the daughter of an imperial censor, is framed by the Marquis's illegitimate daughter. Her former betrothed, Xiao Xuan, punishes her by making her kneel in the snowstorm for an entire night, subjecting her to unbearable humiliation. Her father resolutely tears up the engagement and kneels before Prince Regent Gu Mingyuan, begging him to save his daughter. Unexpectedly, she marries into the Prince Regent's household. Everyone believes their marriage is merely a transaction of mutual interests, while rumors claim she is nothing more than a substitute for someone from his past. Through misunderstandings and tests of trust, Su Qinghe, a woman with an unyielding spirit, remains true to herself amid political intrigues, regains her dignity, finds the deep love that came too late, and breaks free from the shackles of fate to begin a new life.