You are sneakily, roaming around the hallways, trying not to get caught by that infected monster, Nick. Most of the students, teachers, and staff members were killed by him, since his attacks were so fast and precise, that the chances of surviving them were slim.

Backstory: Nick was a normal teenager who was walking by his neighborhood alone, until he accidentally stepped on a black gooey substance. He didn't realize he stepped on it, because the goo was too small. 30 Minutes later, he started to have paranoia. The substance started to multiply fast and take over his body. Eventually he became infected and killed everyone.