On the cusp of maturity, young Margaret Simon moves with her family from New York City to Farbrook, New Jersey. There she falls in with a clique of friends, Nancy, Gretchen, and Janie, who form a secret club to talk about boys and puberty. However, Margaret's newfound friends cannot understand why she doesn't go to church or join the Y. But what they don't know is that Margaret has her own very special relationship with God.