When his teacher asks him to write a persuasive argument about something he really wants, fourth-grader Calvin creates a unique way to express his desire for a dog.

Nine-year-old Calvin catches the attention of the school bully on the day before he starts fourth grade, while at home, the unfriendly, fifteen-year-old daughter of his mother's best friend has taken over his room.

Ramona's job is to be nice to fussy Mrs. Kemp, who watches her while her mother works.