Li Tong came to Snake Island with his company's documentary team to collect news, but also to find the truth about his father's disappearance back then. Several people landed on the island only to discover the weirdness of the island's indigenous people, their resistance to outsiders makes everyone feel very strange. The only inn on the island that is open to the public is run by two sisters, Lan Ran and Lan Sha. The eccentric character of her sister Lan Ran, as well as the cautiousness of Lan Sha and the cruelty of her servant Batu, put them in deep danger. They finally learn the truth behind Lan Ran and the others but are under siege by three giant snakes on the island, at this moment, a mysterious person saved Li Tong and others......