Inside Lee Byeong-chan's science lab, a student incurs a seemingly harmless bite. Shortly after, a fast-spreading out...

The infected multiply in droves. Scrambling for their lives, Nam On-jo and Lee Cheong-san find safety with others ins...

When one of the group is scratched while fighting a zombie, Lee Na-yeon demands they kick him out. Outside, the virus...

In need of a cellphone, two students take a risky journey to the teachers' office. Byeong-chan passes on critical inf...

Martial law is imposed on the city. When Cheong-san is separated from the rest of the group, On-jo leads a mission to...

The group clears a path to Cheong-san using sound to draw away zombies, but a new type of threat surfaces. Nam So-ju ...

To make it out of the music room and onto the roof, the students put into action their most perilous plan yet. Elsewh...

Jae-ik and his crew run into a student from the school. Na-yeon works up the courage to face her peers. The group sha...

A disturbance at the camp shifts the military's understanding of the virus. A thunderstorm provides cover as the grou...

The auditorium quickly becomes a trap for the two newly united teams of survivors. Byeong-chan's video logs reveal a ...

Though a surprise protector provides the group safe passage to their next stop, Yoon Gwi-nam is not far behind. The m...

The students make it to the quarantine camp, each of them weighed down by tragic loss. Months later, they hang on to ...