Princess Mia is back for the 6th installment of the Princess Diaries and her life is just getting more complicated everyday. Lilly and Grandmere join forces as they try to get Mia elected president of the school, even though Mia does not want to be president. In the meantime, Mia worries that boyfriend Michael really expects her to "do it" now that he's a college man. Arch-nemesis Lana Weinberger is Mia's political foe, and there's a new English teacher certain to help Mia develop her writing career. As if that isn't enough, Mia worries so much about her new baby brother, Rocky, that Lilly nicknames Mia "Baby-Licker," and the snails Mia dumped into the Bay of Genovia are creating an international incident!