A married couple, Chris and Ruth Miller, are awakened by the whimpering of their little daughter, Tina. Chris goes to see what the trouble is. Their dog, Mack, begins to bark from the backyard. Chris cannot find Tina either in or under the bed, even though her pleas for help seem to be coming from nearby, yet far away. He calls Ruth into the room, and she is similarly mystified. Chris phones his physicist friend, Bill, for help, and opens the door to let the incessantly barking Mack into the house. The dog runs under the bed and disappears, but can still be heard barking, again close, but far away.