Lin Yan, a poor college student, takes in a perfect roommate, Xie Er, who claims to be from a "high-dimensional world" and has lost his memory, for rent. Schell looks at the stock market like a child's graffiti, and sees knowledge from prestigious schools as primitive symbols. Lin Yan relied on him to easily achieve a counterattack in life, but it attracted an investigation by the national security department. When the special department broke in, Xieer protected Lin Yan behind him and said indifferently to the black muzzle: "Apologise to my master. Otherwise, I will treat you as a civilized virus and execute formatting."
