Having recently discovered she is the sole heir to the throne of a tiny European principality, fourteen-year-old Manhattan resident Mia writes in her journal about her attempts to cope with this news, as well as with more typical teenage concerns.

Princess Mia is introduced to her Genovian subjects, and more importantly, she goes out on a date.

Princess Mia's junior year in high school begins with a difficult course load, a crazy student council race, Grandmere's search for temporary lodging, and learning that her boyfriend is moving to Japan for a year, partly because she will not sleep with him.

Princess Mia's friends and assistants examine the style, accomplishments, and other characteristics of real and fictional princesses, as Mia gleans from each a "random act of princess" for self-improvement.

Although she has recently completed a 400-page romance novel, Princess Mia, in her last month of high school, has yet to pick a college, find a prom dress, or decide if her boyfriend J. P. is really The One.

The first adult installment of the Princess Diaries series "follows Princess Mia and her Prince Charming as they plan their fairy tale wedding--but a few poisoned apples could turn this happily-ever-after into a royal nightmare"--Page 4 of cover. For Princess Mia, the five years since college graduation have been a whirlwind of activity. Living in New York City, running her new teen community center, attending royal engagements. And speaking of engagements....

Mia finds that nothing's simple when you're the new Princess of Genovia. With her mother dating her algebra teacher, a secret admirer sending mysterious e-mails, and a bad case of the hots for her friend Lilly's brother Michael, Mia's discovering that life as Princess Amelia Mignonette Grimaldi Thermopolis Renaldo can feel like a right-royal muddle!

Mia is so totally ready to love her life. She has a college boyfriend, no more Algebra and she's writing for the new school 'zine. But Geometry is even worse than Algebra and Michael's busy schedule leaves him no time to email her, let alone see her. And now Grandmere's mysterious surgery means she keeps changing her will. Will life ever be anything other than a right royal muddle for the Princess of Genovia?

Princess Mia and her friends volunteer to build a house for the less fortunate during their spring break.

Mia was going to spend all summer with Michael and her new baby brother, but now she has to go on another boring state visit to Genovia. It looks as if it will take all of Mia's newly-learned diplomatic skills to get her to the prom she's always dreamed of.