In this diary written during the COVID-19 pandemic, Princess Mia Thermopolis of Genovia records her most heartfelt emotions while dealing with personal and political battles, such as imposing health restrictions on her small European nation; living in lockdown; and dealing with her demanding grandmother.

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 has just graduated from college. She is soon going to take over as Queen of Genovia from her grandmother, Queen Clarisse. However, Mia learns that she must marry in 30 days or forfeit the crown of Genovia to another rightful heir, Nicholas Devereaux. His uncle, Viscount Mabrey is really the one who wants Nicholas to be King. Not trusting Nicholas, Mia picks a decent guy who's sweet and charming and likeable, but can she go through with...

Sixteen-year-old Mia finds an old diary and enjoys reading what she wrote about her first Valentine's Day with Michael.

During the days before her sixteenth birthday, Mia records in her diary her fear that her grandmother and friends may be planning to throw an extravagant Sweet Sixteen party.

While Mia tries to get over breaking up with her boyfriend, she discovers a diary kept by a former princess of Genovia from the 1600s, the contents of which could change the fate of her country forever.

In a series of diary entries, Princess Mia describes celebrating Christmas with her friends in Genovia.

Your basic Cinderella makeover story with a fresh and affectionate twist. Mia is a frizzy-haired, glasses-wearing 15-year-old girl whose two highest ambitions are to become invisible and to get a few kisses from an attractive school heartthrob. She is stunned and horrified when her coolly continental grandmother shows up and informs her that she's the crown princess of the European principality Genovia. Soon enough, Mia has to undertake "princess...

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.