A zombie apocalypse happens in South Korea in 1968. A newly wed couple, Lee Song-yeon and Kang Hyeong-yoon along with Song-yeon's sister, Lee Min-yeon and Hyeong-yoon's brother Kang Joo-hwi try to make it out alive. They go through a series of events while trying to escape their zombie-filled apartment trying to reach the evacuation site to become safe. Can these 4 survive the attack of the zombies from 1968?