Li Wei, a rookie constable, inherits a strange Kui-patterned jade pendant left behind by a distant relative. During a late-night patrol, he watches an invisible, vicious creature tear a night-shift security guard apart and erase him in an instant. Overcome with terror, Li Wei feels the pendant suddenly grow hot. Agonizing pain splits his forehead, and a cold, inhuman vertical pupil, the “Eye of Shanhai,” suddenly opens!
The neon lights of the modern city warp and peel away before his eyes, revealing the hidden horrors beneath. Grotesque “Shanhai fiends” stalk the alleys, hunting their prey, while “Shanhai folk,” who look human but behave mysteriously, walk indifferently among the crowds. Forced to become the sole witness to this supernatural hunting ground, Li Wei cannot rely on his constable's badge for protection. Beneath the bizarre shadows of the city, he must depend on the eye that brings him endless nightmares to pursue the truth.
The jade pendant pressed against his chest pulses silently with a bloodthirsty hunger toward the lurking monsters, drawing him into an even deeper whirlpool of darkness and the cruel trials of his own fate.