The McFadden family return, with a situation that thrusts Harlie into a never-before contentiousness with Daniel.

Charlie begins to worry about the permanency of her place in the Lancer household, and has some growing pains to struggle through.

The Curtis family returns, and June faces some tough situations, living in 1960s Oklahoma.

Harlie cuts school, and gets into a car accident with a new girl at school, and tries to hide the fact that she's hurt from Brian and Crane. As she deals with the aftermath, she learns a few things about herself, like what kind of person she wants to be.

When Harlie discovers she has a serious health issue, she struggles with her anger, and finds herself rebelling against family rules and expectations, and risks losing sight of her goals and dreams.

When Guthrie falls in love for the first time, he and Harlie don't see eye to eye about things, and their close relationship suffers.

Harlie meets a girl that she thinks is the perfect one for Brian. Now, if she can just convince everyone else that she knows what she's doing.

Harlie, the 15 year old younger sister of the seven McFadden brothers, finds herself in a situation, and requires help from several of her brothers to find her way out of trouble. This story takes place four years after Hannah joins the family.