Ann McKenzie loves living in Williamsburg. All of her family and friends are nearby, and there's always something exciting happening in the colonial capital. Now that she's 9 years old, it's time for Ann to start acting like a proper young woman, learning how to knit, to cook, and to manage a household. She prefers assisting her father, Dr. McKenzie, with his patients and working in his apothecary. Ann knows it's unheard of for a woman to be a doctor. But there must be some way for her to care for people in the way her father does.