Korean horror sequel directed by Yeon Sang-ho. Set four years after 'Train to Busan' (2016), the film follows former soldier Jung Seok (Gang Dong-won) and his team of Korean refugees as they venture into the port city of Incheon on a mission to recover 20 million dollars from an abandoned truck. However, as they attempt to escape the quarantined zone, they find themselves battling hordes of zombies and a menacing band of mercenaries known as Unit 631.