That's what Miss Edgecomb, Rosey Sachs's sixth grade teacher, says when she asks her students to write stories about their families. But, Rosey wonders, what can possibly be interesting about her immigrant parents, her small Brooklyn house, and the everyday lives of her friends and relatives in New York in the early twentieth century?

Then Rosey starts remembering things she hasn't thought about since they happened, and she realizes she does have stories to tell: about Momma and Papa, about her big brother Arnold and her baby sister Sadie, about her uncles and aunt and cousins, and about Itzy Carnitzky, Arnold's best friend, who might just turn out to be Rosey's friend as well. And Rosey discovers that Miss Edgecomb was right.