Emperor Chu Yuan of Ye covets the Spirit tribe's secret treasure, leading an army to bloodbath Mobei. The Mobei royal family perish together for their country, while the guard Helan Jin surrenders, offering the treasure. Spirit princess Sang Mo vows revenge, disguising herself to enter the capital seven years later to clash once more with Brocade Guard Commander Helan Jin. Amidst tit-for-tat confrontations, misunderstandings multiply. She finally uncovers the truth behind the surrender and betrayal, reverses regrets with the Spirit-Wielding Mirror, and reunites with her old companion.