The Princess Diaries meets Nancy Drew in this middle grade novel about sleuthing twelve-year-old princess Genevieve Sun as she works to solve a crisis between two kingdoms.

Twelve-year-old Genevieve Sun is settling in nicely in her new role as Princess of Raldonia. After a rocky start (thanks to her uncle the Duke trying to overthrow her), Gen is finally in the good graces of her grandmother the Queen. Gen also has friends across her tiny island home, even attending weekly game nights in between her princess duties.

Everyone in the palace is abuzz preparing for a visit from South Mallanthran royals and dignitaries. Gen is equally excited and nervous—not only will she get to learn more about her dad's home country, but she'll also meet her paternal grandfather (a South Mallantran ambassador) for the first time. And on an official level, there's a lot riding on this trip: the trade treaty between Raldonia and South Mallantra has expired, and it is now more important than ever to strengthen their relationship.

Unfortunately, the gift that was prepared for a traditional presentation from the Queen to the South Mallantran Emperor has been stolen! Gen Sun—also known as Princess Private Eye—and her friends are on the case. Will they find the missing robo bird before a diplomatic disaster arises?