Abstract: After the Cultural Revolution, a period marked by a global retreat from radical politics and increased compromises, filmmakers in the Hong Kong leftist film industry faced financial challenges stemming from the studio’s struggles during the Cultural Revolution. Despite these difficulties, they ingeniously incorporated generic elements to captivate audiences, using popular genres as conduits for social commentary. The Stranger by Feng Huang Motion Picture company stands out, as director Bao Fang adeptly appropriated science fiction elements to adapt a real story of espionage in Hong Kong. The film signifies Bao’s transition from opera film and historical pictures to negotiating realist and science-fictional elements to convey social innuendo. Drawing inspiration from recent works by Mingwei Song and Seo-young Chu, my argument extends to explore how sci-fi serves as a mode of expression for geopolitical commentary. The film not only expresses concern over Soviet espionage but also reflects the fear over the collapse of grand narratives such as Enlightenment and Revolution.