Lee Jae-yoon, a soldier serving his compulsory military service, breaks up with his girlfriend Kang Young-joo; when a zombie outbreak occurs in Seoul, they both race to reunite with each other.
EPISODE 1
EP01.
Young-joo, focused on adjusting to her new job, grows tired of her boyfriend Jae-yoon's constant complaints, and she breaks-up with him; when Jae-yoon sends her a heartfelt message, she heads to see him; on her way, she faces an unexpected incident.
EPISODE 2
EP02.
Jae-yoon and his junior, In-ho, head down to Eden Hotel for an errand; they find a plane crashing into the heart of Seoul, and the hotel turned into a bloody chaos; Young-joo and Jin-wook confront zombies and team up with Tae-shik.
EPISODE 3
EP03.
Soo-jeong and Chef Jung from the Eden Hotel, Jae-yoon and In-ho manage to return to the military unit; they find out the base they thought was safe begins to face the threat of zombies; Young-joo sees the text messages sent by Jae-yoon.
EPISODE 4
EP04.
In the midst of the zombie crisis, Jae-yoon and Young-joo reminisce about their happy past and long for each other even more; Jae-yoon and his squad mourn the loss of their comrades but find relief in the news of a supply helicopter's arrival.
EPISODE 5
EP05.
After downing the supply helicopter, First Sergeant Jung Tae-hwa realizes that survival at their station is impossible; he plans to lead his platoon in an escape from the zombie-ridden A Tower; Young-joo's group finally reaches the gate of A Tower.
EPISODE 6
EP06.
Young-joo is left by herself at the Express Bus Terminal Station, but a stroke of luck leads her to a metro staff office, where she gathers supplies to battle the zombies; Jae-yoon's group reaches Eden Hotel, where they run into Arron Park.
Park Jeong-min
Jisoo
Lim Seongjae
Kim Joon-han
Hong Seo-hui
Kang Yeong-seok
Yoon Sung-hyun
Samuel Yeunju Ha
Han Jinwon
Ji Ho-jin