Geronimo Stilton is the editor of the Rodent's Gazette, the most famouse paper on Mouse Island. In his free time he loves to tell fun, happy stories. In this adventure, Geronimo has to face his worst enemies, the Pirate Cats, who have discovered a way to travel back in time and change history... Japan, 1603. Geronimo and his friends don't know why the Pirate Cats went back to this precise point in time, but they are sure the Pirate Cats are up to no good! Posing as a traveling troupe of actors, Geronimo somehow manages to convince the locals that he's really a shogun, and no the first samurai! Will Geronimo be able to uncover the Pirate Cats' plan in time to stop them? Or have the Pirate Cats finally won?