Twelve-year-old Catherine navigates the complexities of family, friendship, and the definition of 'normal' when her brother's developmental differences impact her social life. Catherine's primary objective is to achieve a semblance of normalcy, a goal complicated by her brother David's autism and the family's constant focus on his needs. She attempts to manage David's behaviors by teaching him rules, but her own actions and burgeoning friendships with Jason and Kristi challenge her understanding of acceptance and individuality. The narrative framework appears to be primarily third-person, focusing on Catherine's perspective as she grapples with these social and familial dynamics.

This Newbery Honor Book is recognized for its heartfelt and witty exploration of feeling different and finding acceptance. Readers often connect with Catherine's struggles to balance her own desires with her family's needs, particularly concerning her brother David. The narrative's strength lies in its sensitive portrayal of disability and its impact on family dynamics, as well as its nuanced depiction of friendship. The book is praised for its ability to prompt reflection on what constitutes 'normal' and the importance of empathy.