Piper and Addie are going to start their sophomore year in senior high school, when their friend, Miss Julie, rents rooms to Cassie and her stepson, Jeff. Cassie’s mare is going to foal soon and Piper has the responsibility of checking on her daily. Piper and Addie disagree about boys, a situation which worsens because of Piper’s initial dislike of Jeff. As she gets to know and accept Jeff, when he is accused of theft, Piper and her best friend defend him to all adults. What will happen when Cassie steals, then leaves the country as her mare goes into labor with no one but the girls and Jeff to help?