Legend has it that in ancient times, all mountains and rivers were guarded by guardians. The patron saint of Zhiyishan is Jiu (Cui Zhenhe), because she witnessed a great event in the world, then fell in love with the heroine Yin Xihua (Li) and even gave up her eternal life. In order to become a human being, Nine Yue Ling must abide by three rules in The Book of Nine Families, but because of an accident, Nine Yue Ling failed to abide by these rules, leaving Xihua and their newborn children behind. Xihua abandoned his son in the middle of the river, and was later adopted by the wealthy businessman Park Wu, and became a passionate and curious Cui Jiangjia (). On the other hand, because of dissatisfaction with the definition of women in the times, Tan (Suzy Bae), the instructor of the Invisible Knife Museum, who wants to live a high personality, has pity on Jiang Jia because of a survey, and the two also fell in love in a series of events.