Twenty years ago, a baby boy named Sanqi, wrapped in swaddling clothes atop Cangyan Mountain, was adopted by a married couple surnamed Chen. He had blood-red markings on his palm and could understand the language of birds and beasts, but he had no idea he was the direct descendant of the Chen clan, a reclusive great family. On a stormy night, lightning and fire split open a secret passage. The ancient texts behind a bronze door revealed that he was the sole heir to the "Mountain Ghost bloodline," and that his childhood friend Chen Xin had the same mark on the jade pendant around her neck.
To unravel their fate, the two set out to find the Chen clan's ancestral home, traveling through Miao territory, the Western Regions, and beyond as they uncover mystery after mystery: Chen Xin's blood-moon dreams, the truth behind the forbidden power, and a conspiracy spanning three generations behind the adoption. Hunted by forces of good and evil, Sanqi's left eye becomes a golden slit pupil on the night of the full moon, awakening the power of his bloodline. When Chen Xin plays the qin, ancient script appears on its strings, and the seal within her begins to loosen. Can these lovers, both burdened by a taboo, find redemption between truth and destruction?