Feng Yixuan, ruler of the Fengning Kingdom, and Shen Simo, daughter of the Chancellor, were childhood friends who had promised to stay together. But Shen Simo had been sickly since childhood, and she was struck with Fire Poison while saving Feng Yixuan. The only way to cure it was with the Snow Cicada, a thousand-year-old sacred healing treasure. The Snow Cicada is an extremely yin creature, and can only be nourished by the blood of someone born in a yin year, yin month, yin day, and yin hour.
The Yunling Tribe is a mysterious and unusual clan that has guarded the Snow Cicada for generations. Every Holy Maiden of the clan is born in a yin year, yin month, yin day, and yin hour. When a new Holy Maiden is born, the previous one transfers the Snow Cicada to her, and the new maiden nourishes the sacred treasure with her blood. The Yunling Tribe does not answer to the Fengning Kingdom, and the Snow Cicada can only be obtained if they willingly give it up. For the sake of the Snow Cicada, Feng Yixuan has no choice but to approach Yun Luo, the current Holy Maiden of the Yunling Tribe.
