The story is set during the late Ming Dynasty when a mysterious epidemic breaks out. It follows the thrilling journey of Chu Sijing, a member of the secret service, as he navigates a life-or-death crisis on a deserted island.

Kai, a reclusive young man who believes he's being filmed by aliens, forms an unexpected bond with his new roommate, Xiaole. When Xiaole mysteriously vanishes, Kai must piece together the puzzle of his lover, uncovering a portrait both familiar and strange.