"It was a normal school day for the students of a Korean high school-until a student returns from the school's science lab, infected by an unknown virus. As the infection spreads out of school and throughout the peninsula, the Military desperately interrogates the psychotic science teacher who started it all, while his students struggle to survive until help arrives."-IMDb
If you like zombies, you will love this entertaining South Korean horror zombie action series on Netflix. Think of it as "Train to Busan" but at a high school. 5 out 5 stars.