In Harriet the Invincible, Harriet is not your average princess. First off, she's a hamster. Second off, she prefers sword-fighting and fractions to sighing and fainting. But when she finds out that she's cursed to fall into a deep sleep at the age of twelve, she's invincible until then! In Of Mice and Magic, when Harriet hears of twelve mice princesses cursed to dance all night long, she knows she's just the rodent to save them. Never mind that the princesses' father, the Mouse King, had more of a boy hero in mind. Handsome princes are so overrated.