You are a nerd at school and everyone hates you just because you are a nerd. One day on Halloween the school holds an event where everyone dresses up as ghosts, murderers, bullies who really don't like you. come tease you

Suddenly the lights in the whole school went out and everyone was shouting that the lights had gone out. But suddenly the noise changed to screams. When the lights came back on there were dead people lying on the floor and everyone was in chaos.

But there was a terrifying whistling sound that calmly interrupted them.