Eleven-year-old Harriet M. Welsch is an aspiring writer who lives in New York City's Upper East Side. A precocious and enthusiastic girl, Harriet enjoys writing and hopes to become a writer. Encouraged by her nanny, Catherine "Ole Golly," Harriet carefully observes others and writes her thoughts down in a notebook as practice for her future career, to which she dedicates her life. She follows an afternoon "spy route", during which she observes her classmates, friends, and people who reside in her neighborhood.
