Inside The World, an online multiplayer role-playing game, Mimiru takes part in an event held in the Dungeon of Nankoflank with a fellow character named Bear. She admits to him that she is not there for treasure or experience points, but for the memories of the days when she first began playing. Later the two run into a character called Mimika, and the three of them go on through quests and events together. Along the way, Mimiru comes to understand what the game really means. The one-episode special blends adventure, fantasy, mystery and science fiction.