The film begins with a sleepover of children. They prank call people while playing the game Seventy Five. Meanwhile, their parents are in the other room having drinks. The rules of the game are that you must keep a random person on the line for 75 seconds, and they must believe what you’re saying. As the night goes on, the kids go to bed, and a man whom the kids recently called calls back, before jumping from a closet and attempting to kill one of the kids before the parent jumped in front of him. The killer goes on to killing all the parents in the house with an axe. As the children hide in their bedrooms, the killer opens the closet to discover some of the kids and attempt to murder them before one of the kid’s mother is choked to death by the killer. He then hears police sirens and flees. He is never caught.