Season 1
12 episodes · Jan 28, 2022
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S1E1Episode 1
Jan 28, 202266mInside Lee Byeong-chan's science lab, a student incurs a seemingly harmless bite. Shortly after, a fast-spreading outbreak soaks the school in blood.
S1E2Episode 2
Jan 28, 202270mThe 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.
S1E3Episode 3
Jan 28, 202262mWhen 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.
S1E4Episode 4
Jan 28, 202272mIn 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.
S1E5Episode 5
Jan 28, 202256mMartial 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.
S1E6Episode 6
Jan 28, 202267mThe 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.
S1E7Episode 7
Jan 28, 202260mTo 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.
S1E8Episode 8
Jan 28, 202258mJae-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.
S1E9Episode 9
Jan 28, 202261mA disturbance at the camp shifts the military's understanding of the virus. A thunderstorm provides cover as the group agrees to keep on moving.
S1E10Episode 10
Jan 28, 202254mThe 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.
S1E11Episode 11
Jan 28, 202256mThough 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.
S1E12Episode 12
Jan 28, 202253mThe 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.