When Flynn Greer stops at the Circle Y just before Sunday meeting, he becomes a hero in Sadie's eyes by helping her rope runaway Babe. She proudly introduces him to the family and confides in Opal that he used to be a school teacher. Opal promptly falls in love with Flynn and wants to find a way for him to stay. She tells Caleb and he convinces him to stay on to teach the children. Everyone is excited by the news and discusses plans for building a schoolhouse--everyone, that is, except Mary and Mitch. They're convinced Flynn isn't who he says he is, and they have a plan to find out the truth!

Meanwhile, Gerta and Gabe's wedding is almost called off when Gerta insists that she will not live with Gabe's father and brothers in their one-room sod house. In the midst of all the activity, Opal makes plans of her own, hoping that Flynn will be the "fine young man" she has been waiting for.

Is Flynn Greer who he says his is? Will Sadie's friendship with Mary be ruined over their argument about Flynn? Will Sadie help Opal and Flynn run off together? The eighth Sadie Rose Adventure, this heartwarming and exciting story about God's ability to change even the hardest heart with His unconditional love and grace is fast-paced reading for 9- to 12-year-olds.