Ghost Terminal , the transit center of the dead , is a must – visit place for the dead who have left this world before going to the underworld . The dead will stay in the Ghost Terminal for 49 days , undergo immigration screening , and only the dead can cross the Nether on a boat bound for the underworld . Seon – woo , who lost his mind in an explosion at Incheon Airport , wakes up in Ghost Terminal However , Seon – woo is in a coma , not dead , and he finds out that he has come to Ghost Terminal by mistake . While waiting to return to Riseong , Seon – woo hears the news that his wife and daughter , who were together at Incheon Airport , are still trapped at the airport and that the airport is about to collapse . The place where his wife and daughter were imprisoned was in a remote place out of the reach of rescuers , and only Seon – woo knew the location of the place . Seon – woo hurriedly tries to return to Seung – ri but the situation goes against his will , and he ends up being trapped in the terminal . Seon Woo , who had to return to the world to save his family , tries to escape from Ghost Terminal with all his might …