Mia has been invited to speak at a gala for Domina Rei, an elite society of powerful businesswomen. But what could she possibly have to say?

Now that Michael has broken things off, Mia can barely get out of bed, and her parents are making her see a therapist. School, where Lilly still refuses to speak to her and Lana suddenly wants to be bff, is a total nightmare. Even J.P.'s efforts to cheer Mia up (he's being really sweet!) aren't helping. What's a royal to do?

Just when things couldn't get worse, Mia uncovers an old family secret, a long-forgotten diary of a teenage princess of Genovia. It could be just the thing to help Mia write her speech—but it might also change the fate of the Renaldos forever.

Thermopolis is pretty sure there's nothing worse than being a five-foof-nine, flat-chested freshman, who also happens to be flunking Algebra.
Is she ever in for a surprise.

First Mom announces that she's dating Mia's Algebra teacher. Then Dad has to go and reveal that he is the crown prince of Genovia. And guess who still doesn't have a date for the Cultural Diversity Dance?

一位平凡的高中女學生Mia，生活日復一日平淡無奇，然而這一切突然間有了改變，Mia赫然發現自已身份正是一位公主！從醜小鴨變成天鵝的Mia，她與同學好友間的關係有了微妙變化，然而Mia要如何面對生活的轉變呢？ ●Mia