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.

An old man suffering from depression is found dead, and his housekeeper, Mi-ran, is charged with the murder. Mi-ran’s defense attorney, Sun-ho, is surprised to learn the only witness to the crime is Ji-woo, a teenage girl with Asperger’s. Will Ji-woo be able to take the stand and provide a valid statement?