Na-hee (28, Female), a civil servant working in the zombie-extermination team, gets tired of her boyfriend Sung-chul (30s, Male) who promised to marry her when the zombie apocalypse ends. One day, while carrying out her zombie-extermination duty as usual, Na-hee encounters a communicatable zombie Eun-bi (23, Male) by accident.
Even though both are placed in chaotic circumstances, Na-hee agrees to help Eun-bi who is eager to rediscover his true self within the lost memories and must move to Alaska for survival along with the Cold Human Liberation Front. As Eun-bi needs to keep his body temperature low, Na-hee hijacks a refrigerated truck and runs off with him. On top of that, Jun-hyuk (35, Male), who works for the zombie-care company ‘Z-Solution’, joins in Eun-bi and Na-hee‘s considerably perilous survival adventure.