On this Japanese island, the Memory Police make things disappear. First the residents wake up and realize that an object is fading from their memory, and then they need to dispose of all copies of the object on the island. They comply because, well, what's the use of having something that you don't remember how to use or what it's called. It looses all sentimental value, too. Besides the discussion of loss of public memory and how that can be used as a strategy to control a population, the story approaches the idea of memory as self. If we forget our experiences, are we really the same person that we used to be?