During the reign of Emperor Zhizheng of the Great Yuan Dynasty, Yun Qiaoqiao, the daughter of a merchant, was forced to marry a cruel Mongolian noble. On the eve of her wedding, she fled into the mountains with her ancestral fox-shaped jade pendant. When he accidentally fell off a cliff, the jade pendant awakened the sleeping fox fairy Xuan Xiao - he was investigating a conspiracy using the identity of the Han general Chi Yan who died in battle. When a naughty girl who escaped from marriage meets an arrogant fox fairy who is forced to act as a substitute, a fantasy adventure about identity and true love begins...
