The "Memory Space" organization pays high prices to buy other people's memories, and some people sell memories to the organization that they no longer want to think of or think are unimportant. No one knows what this organization is going to do, it's just that as time goes by, people forget each other and the world is no longer united. At this time, the organization is secretly developing its power and seems to be plotting something... Can people see through their big lie and save the earth?