Seoul Station is a South Korean adult animated post-apocalyptic zombie horror film written and directed by Yeon Sang-ho. A second released installment in the Train to Busan film series, and a prequel of its eponymous film, the aeni (South Korean animation) explores how the zombie epidemic began in South Korea before the latter's events, and revolves around the three main characters; Hye-sun, a young woman and prostitute who is attempting to survive in the world who sees her as disposable, Suk-gyu, her father who searches for his runaway daughter with help from her boyfriend, Ki-woong.