Josie Pemont is a 10-year-old girl from Cincinnati, Ohio. Josie has just discovered that she's legally Princess Marie-Joséphine Charlotte Philippine Gabrielle Antoinette de Piémont and that she's the fourth cousin once removed of the king of Piémont, a tiny Mediterranean country. Even stranger, Josie's just inherited the throne after the sudden death of King Henri IX and his son in a plane crash. Josie is about to become Queen Marie-Joséphine II, and she's feeling overwhelmed.