Huang Zhenkai, who hastily ended a relationship, move out of his girlfriend's house and find another place to live. In this way, he met Li Xiaole, a young girl who was also drifting in the city, and began to share a roommate life with her.

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.—Niuvision media ltd.