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.
Though an unexpected protector helps the group reach their next destination, Yoon Gwi‑nam is hot on their heels. The army makes a terrible decision.
Watch Now:AmazonWhen a zombie scratches a member of the group during a fight, Lee Na-yeon demands to be kicked out. Outside the institute, the virus takes over the city.
Watch Now:AmazonThe 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.
Watch Now:AmazonTo 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.
Watch Now:AmazonIn 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.
Watch Now:AmazonMartial 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.
Watch Now:AmazonThe students arrive at the quarantine camp, all heartbroken over their tragic losses. Months later, they cling to the hope that there are survivors.
Watch Now:AmazonA disturbance at the camp shifts the military's understanding of the virus. A thunderstorm provides cover as the group agrees to keep on moving.
Watch Now:AmazonJae-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.
Watch Now:AmazonThe 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.
Watch Now:AmazonThe 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.
Watch Now:AmazonInside Lee Byeong-chan's science lab, a student incurs a seemingly harmless bite. Shortly after, a fast-spreading outbreak soaks the school in blood.
Watch Now:AmazonEpisode Ninja is a small business run by one person.
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