[5] 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,[6][7] 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,[8] Suk-gyu, her father who searches for his runaway daughter with help from her boyfriend, Ki-woong.

[9] Released on 18 August 2016, the film stars Shim Eun-kyung, Ryu Seung-ryong and Lee Joon in the lead roles.

At the police station, the bitten officer calls for backup before succumbing to his infection, reanimating and biting another survivor in the cell.

Riot police arrive just in time and draw the infected away, allowing Hye-sun and an old man to escape the cell and get into an ambulance.

After a speech on his poor position in society, the old man attempts to climb over the police blockade to warn the government officials about the zombies, but is killed by gunfire from the summoned military.

This outrages Ki-woong, who thought a deal was made to help him reunite with his girlfriend, yet Suk-gyu becomes violent to the point where he explains that he wants revenge on Hye-sun for theft.

As Hye-sun reanimates and kills Suk-gyu, the camera zooms past a dead Ki-woong and the infected overrunning the quarantine.

The website's consensus reads: "Thrilling and relentless from start to finish, Yeon Sang-ho's Seoul Station is a layered and vicious entry into the zombie genre.

"[13] Clarence Tsui of The Hollywood Reporter called the film "a simple, thrilling ride through a fiend-infested world.

[5] Created by Yeon San-ho, this animated film is considered as the prequel to his critically acclaimed movie, Train to Busan.