After the national zombie outbreak in Train to Busan, South Korea became a dead country. Right after the last survivors boarded the last refugee ship, veteran Jung Seok (played by Dong-won Gang) and his family discovered zombies among the refugees. Luckily, Hong Kong took them in, and they started a brand new life. However, lured by the offer of money, Jung Seok joined a squad going back to South Korea for a big amount of cash. To their surprise, after they got back there, they found a bunch of survivors struggling for life. Jung Seok decided to take them out. Would they successfully flee that peninsula full of zombies?...