Qian Yunxi, a young girl sent to live in the mountains at the age of eight for possessing "strange abilities". Her noble family marries her off to an enemy prince, Ye Youming, to restore peace and harmony, instead of her younger sister.

When Qian Yunshang's marriage to Ye Youming is arranged by the emperor, she is terrified that the bad blood between their families will lead to her being treated miserably in the Ye household. Torn between duty and concern for his daughter, Qian Aotian devises a reckless plan. He summons his firstborn daughter-her existence unknown to all but his own family-to be the stand-in for her younger sister. Due to her unusual powers, Qian Yun Xi was exiled by her family when she was a child. Deprived of filial affection, she made a life of her own amid the wilderness on Mt. Ling Yun. However, everything begins to change when she marries Ye Youming in her sister's stead. Harboring immense contempt for the family of Qian, Ye Youming refuses to acknowledge Qian Yun Xi as his wife and treats her coldly, going so far as to banish her from his palace grounds. But he can only resist her childlike charm and boldness for so long.—MAL Rewrite

Qian Yunxi, the eldest daughter of the Grand Councilor, has had supernatural powers since she was young. Because of this, she has been kept in the Spirit-Cloud Mountain as she is seen as an ominous girl. When she's 16, she finds herself substituted for her younger sister into a marriage with Prince of Ye. However, it is said that the Prince of Ye is cold, eccentric, and cruel.—Crunchyroll