Millie is a smart twelve-year-old country girl living on the family farm. Life on the farm brings freedom, mischief, and sometimes even a little mayhem for Millie. As she navigates from childhood to the awkward years of adolescence, Millie learns that a good sense of humor and a crazy family help to make the transition an easier one.

As Millie transitions from elementary school to junior high school, she searches to find where she will fit in. She experiences her first crush and realizes why they call it a "crush." With the help of her siblings and family, Millie learns that change isn't all bad.

Summer has always meant freedom to Millie, but this summer, with all the changes physically and emotionally, she realizes that those things may be coming to an end and vows to hang on to this summer as long as she can.