In the late summer of 1987, when a typhoon was approaching in Yau Ma Tei, Hong Kong, mechanic Ye Cheng rescued a seriously injured black cat on a rainy night. Unexpectedly, the black cat turned out to be the ancient mythical beast Xuanli. After receiving the "Psychic Eye" as a gift, he was able to see spiritual energy and communicate with spiritual beasts, and was involved in a secret dispute that spanned the realms of Yin and Yang. His gentle best friend Lin Wanting has hidden murderous intentions, and evil forces are pressing closer. Ye Cheng successively conquers the descendants of mythical beasts such as the Tengu Abai and the Fire Rat. In the neon and gloomy streets of Hong Kong Island, he transforms from a lone wolf worker into a mortal hero guarding the spiritual beasts.
