Total Seasons :2Total Episodes : 13
A high school becomes ground zero for a zombie virus outbreak. Trapped students must fight their way out — or turn into one of the rabid infected.
Inside Lee Byeong-chan's science lab, a student incurs a seemingly harmless bite. Shortly after, a fast-spreading outbreak soaks the school in blood.
Air Date : 2022-01-28
The infected multiply in droves. Scrambling for their lives, Nam On-jo and Lee Cheong-san find safety with others inside a classroom — but not for long.
Air Date : 2022-01-28
When one of the group is scratched while fighting a zombie, Lee Na-yeon demands they kick him out. Outside, the virus swallows up the city.
Air Date : 2022-01-28
In need of a cellphone, two students take a risky journey to the teachers' office. Byeong-chan passes on critical information to Detective Song Jae-ik.
Air Date : 2022-01-28
Martial law is imposed on the city. When Cheong-san is separated from the rest of the group, On-jo leads a mission to use a drone to locate him.
Air Date : 2022-01-28
The group clears a path to Cheong-san using sound to draw away zombies, but a new type of threat surfaces. Nam So-ju breaks out of the quarantine camp.
Air Date : 2022-01-28
To make it out of the music room and onto the roof, the students put into action their most perilous plan yet. Elsewhere, Jae-ik comes across a setback.
Air Date : 2022-01-28
Jae-ik and his crew run into a student from the school. Na-yeon works up the courage to face her peers. The group shares confessions around a fire.
Air Date : 2022-01-28
A disturbance at the camp shifts the military's understanding of the virus. A thunderstorm provides cover as the group agrees to keep on moving.
Air Date : 2022-01-28
The auditorium quickly becomes a trap for the two newly united teams of survivors. Byeong-chan's video logs reveal a drastic solution to the crisis.
Air Date : 2022-01-28
Though a surprise protector provides the group safe passage to their next stop, Yoon Gwi-nam is not far behind. The military makes a grave decision.
Air Date : 2022-01-28
The students make it to the quarantine camp, each of them weighed down by tragic loss. Months later, they hang on to hope for a survivor.
Air Date : 2022-01-28
(Nam On-jo)
(Lee Cheong-san)
(Choi Nam-ra)
(Lee Su-hyeok)
(Yoon Gwi-nam)
(Lee Na-yeon)
(Lee Byeong-chan)
(Song Jae-ik)
(Nam So-ju)
(Seo Hyo-ryung)
(Jang Wu-jin)
(Yang Dae-su)
(Min Eun-ji)
(Jang Ha-ri)
(Park Mi-jin)
(Kim Ji-min)
(Oh Joon-yeong)
(Jung Min-jae)
(Yoo Joon-sung)
(Park Eun-hee)
(Kim Cheol-su)
(Kim U-sin)
(Lee Cheong-san's mother)
(Jo Dal-ho)
(Jeon Ho-chul)
(Han Gyeong-su)
(Park Sun-hwa)
(Jin Seon-mu)
(Park Young-hwan)
(Park Hee-su)
(Jung Yong-nam)
(Lee Jin-soo)
(Kim Hyeon-ju)
(Yoon I-sak)
(Principal)
(Son Myeong-hwan)
(Orangibberish)
(Se-bin)
(Medical Officer)
(Kim Min-ji)
(Kang Jin-gu)
(Park Chang-hoon)
(Jang Do-min)
(Kim Kyung-mi)
(Archery Coach)
(Prime Minister)