A group of strangers are trapped inside a fog-covered school where mindless monsters hunt humans ...

A group of strangers are trapped inside a fog-covered school where mindless monsters hunt humans every night. When the teachers abandon them, one student unwillingly becomes the leader. A sudden attack scatters everyone. Trapped in a classroom, the survivors make a desperate balcony escape just as a monster breaks in. Learning the creatures hunt by sight, they hide through the night, listening to screams, surviving until morning.