Aan de vooravond van de Tweede Wereldoorlog zorgen Japanse toeristen, Gestapo, geheim agenten, blaffende honden en 150 lilliputters die auditie willen doen voor "The Wizard of Oz" voor chaos en verwarring in het Under the Rainbow-hotel in Los Angeles. Te midden van alle intriges en misverstanden bloeit er een romance op tussen agent Bruce Thorpe en castingmedewerker Annie Clark.
In the year 2138, virtual reality gaming is booming. Yggdrasil, a popular online game is quietly shut down one day. However, one player named Momonga decides to not log out. Momonga is then transformed into the image of a skeleton as "the most powerful wizard." The world continues to change, with non-player characters (NPCs) beginning to feel emotion. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game has become.
