Inspiration

SAW
A young man, David, is in an interrogation room talking to an unnamed, unsympathetic police officer. David is in handcuffs, and he has blood on his face and shirt. He is smoking a cigarette. He tells the officer that after he finished his work as an orderly at the hospital, he was knocked unconscious and taken to a large room.Inside the room, David was strapped to a chair with a large, rusty metal device locked onto his head. To his left was a small television, which began playing a video showing a frightening puppet, named Billy, that tells him that the device on his head is a "reverse beartrap", which is hooked into his jaws and will pry his face open with great force if he does not unlock it in time. The puppet tells David that the only key to unlock the device is in the stomach of his dead cellmate (Dean Francis).David is able to break free of his bonds, but by doing so he sets off a timer on the back of the device. Across the room, he finds the body that the puppet mentioned, but also finds that the man is actually alive but under paralysis. David panics and slices into the man's stomach anyway. After finding the key, David unlocks the device and throws it to the ground, just as it snaps open. David escapes death from the device.David begins screaming and weeping in horror. At the entrance to the room, the puppet from the video appears on a tricycle. He congratulates David on surviving, and tells him that he has proven he is no longer ungrateful for being alive.The movie ends with the police officer asking "Are you grateful, David?" causing the young man to again break down. As the end credits begin to roll, a CGI replica of the bathroom used later in the full Saw film is shown, although with some differences. A small peephole is shown with an eye visible behind it, which was a concept reused in another trap in Saw.