Cinnamon: Minimum Cinema

At first the knocking is faint and you are able to ignore it. But it slowly becomes louder and more insistent. And one night it wakes you. And you see cracks have developed on the walls, which begin to widen until the plaster crumbles to pieces. Once the walls cave in completely and all the dust clears away, you find yourself standing in a the middle of the wilderness. And you realize that the wall were only temporary. That everything is only temporary.