In the twelfth lunar month of the third year of Yong'an, the snow in the Prince Regent's Mansion was heavier than in previous years.
Xiao Yunhan, who bears the blood feud of his family and holds the military power of half the city, unexpectedly receives the spirit fox Yunli from Jiangnan.
Yunli, the Qingqiu fox demon who had been rescued by Xiao Yunhan, was forced to become a spy and infiltrate the palace in order to save the Qingqiu clan.
The two get closer amidst suspicion and temptation, and struggle with their respective responsibilities. When their trust is tested and their sincerity is threatened, can they resolve their misunderstandings, see through the conspiracy, and regain the warmth of the past, or will they be swallowed up by the whirlpool of intrigue?
Intention: Reunion is not the regret of incomplete reunion, but the pain of parting again.