1) A group of 6th form students decide to sneak back into their school at night to play the "knife game" in their classroom and see if rumors of a ghost are true.
2) While in their classroom playing the game, one of the girls notices blood on the table and screams, wanting to leave. However, the door slams shut, trapping them inside.
3) A creepy noise comes from the teacher's office and when they investigate, they see the ghost of a child sitting in the chair, confirming the school is haunted.