A man, Trevor, woke up on the floor of a mausoleum with a locked collar around his neck, attached to a chain. He began to panic when he realized that his eyes had been sewn shut, rendering him blind. He started pulling on the chain to try to release himself, waking up a second man, Art, on the other side of the room. Art realized he was shackled by a similar collar to the opposite end of the same chain. Art's mouth had been sewn shut, rendering him mute. Between the two of them was a winding drum, with a trigger-tab in place inside a large cylinder that the chain passed through.
During the ensuing struggle, Trevor knocked over a chair with multiple instruments on it, including a hammer and some hooks. As he began pulling on the chain, drawing Art closer to the machine, the tab was pulled out, activating the device. The cylinder began to rotate, slowly reeling in the chain and pulling both men closer together. They both pulled back and forth on the chain, each getting closer to the machine, though the lack of communication made it impossible for them to work together on solving the puzzle. Art spotted a key on the back of Trevor's collar and realized that it might open the one around his own neck. As he made his way over, he armed himself with the hammer to protect himself before the two men started fighting. Trevor swung a hook wildly, eventually stabbing Art in the leg, however Art was able to get the key. As he attempted to unlock his collar, Trevor attacked again, and Art was forced to kill him by smashing his head in with the hammer. Finally, Art fumbled to try to open the lock on his collar. He managed to remove it, and screamed, ripping his mouth open.
During a flashback later in the movie, Art subsequently found a file folder elsewhere in the mausoleum, with "THE KEY TO YOUR FREEDOM" written on its cover. Sitting atop the folder was a tape recorder, which delivered a congratulatory message to Art.