Trapped is set just outside of Wulan after the city is quarantined by the Chinese government. The film humorously shows the challenges Mr. Fei is faced with the increasingly difficult quarantine measures set by the Chinese government to prevent the spread of the virus. The film, the only work done in China on the virus, accurately shows the challenges faced by one of its citizens to return home to his family and circumventing the quarantine restrictions around Wulan.