Welcome to Topsy-Turvydom, a magical kingdom (well, more like an opera stage) full of pirates, policemen, fairies, and fake mustaches! Mr. Gilbert and Mr. Sullivan have ruled this kingdom together in peace, but one day, Mr. Sullivan decides he's had enough. Every opera they write is the same silly old story, and he's ready for something different. Something serious! Mr. Gilbert is stunned. He's lost his business partner and his best friend, and he needs a brilliant idea in order to get him back.When Mr. Gilbert comes across a Japanese street fair, inspiration strikes, and The Mikado is born! Gilbert and Sullivan reunite for their greatest work yet, showing that good things can come from an argument between friends.