.hack//Intermezzo revolves around Mimiru, a player in the virtual game "The World." In this online RPG, players engage in quests and events, such as the event in Nankoflank Dungeon where Mimiru teams up with Bear. Mimiru's motivation for participating in the event is not driven by the typical goals of accumulating treasure or experience, but rather by the nostalgia for her early gaming days. Along with Mimika, the trio navigates through quests and events, with Mimiru gaining a deeper understanding of the game's purpose.