A favorite teacher at a prestigious performing arts school in Century City, Ca has gone missing. A group of kids get a bad feeling from the odd-looking substitute teacher. During the finally moments of recess they find their first clue to what might have happened to their beloved teacher. Each clues finally leads them to find the teacher, dead, in the school's hallway closet. Running to tell the authorities, they come upon a horror scene of young students dying in their path. A zombie attack? Aliens? Crazy substitute teacher? Only one will survive 'What Happened In Room Number 9?' ...but then again.