A soldier faces a zombie outbreak during military service. His girlfriend, an engineer, navigates zombie-ridden Seoul. Both fight through the undead-infested city, striving to reunite amid the chaos.

In 1987, when tear gas exploded like firecrackers, a bloody man jumped into a female college dormitory and a female student treats him thinking he's an activist student fighting for the generation. Based on the handwritten notes of a man who escaped from a political prison camp in North Korea.