Anastasia continues the perilous process of growing up as her thirteenth year involves her in conquering the art of rope climbing, playing Cupid for a recently widowered uncle, and surviving a crush on her gym teacher.
Thirteen-year-old Anastasia acquires poise and self-confidence, a new friend, and advice on becoming a bookstore owner when she commutes to Boston to take a modeling course.
Ready for romance, thirteen-year-old Anastasia answers an ad in the personals with an exagerated description of herself but soon runs into trouble when the unknown man turns up at a friend's wedding.
Anastasia Krupnik sets out to psychoanalyze herself as she attempts to cope with the problems of puberty, conflict with her mother, trouble with her brilliant brother Sam, and the pressures of becoming thirteen.