Intro. At Hyosan High School, everything starts with a secret serum that a scientist developed to protect his son from bullies. However, when this serum is combined with the fear hormone, it has a terrible side effect: It turns people into zombies that are extremely aggressive, can run very fast and transmit the virus by biting. One morning, the first infection appears at the school and within minutes the whole school is thrown into chaos. Students, teachers… everyone either turns into zombies or is forced to fight desperately to survive. All communication with the outside world is cut off, no help comes and the city is quarantined. Asi Karaçay, the quiet, calm and fearless girl of the school, and Alaz, the popular, flirtatious and bad boy of the school, are trapped in the school with the bully, bad guy and other students. There is no food, no water, no way out. But things get worse. One of the zombies at school bites Alaz. Alaz has now started to turn into a zombie. Moreover, due to his immunity, he turns into a zombie that is much stronger and more dangerous than other zombies.