When Georgie unexpectedly struggles with a new challenge, Amy steps in to help her unearth the cause. Then, Amy's worst fears are realized when an eager Tim attends a pregnancy clinic with her. Meanwhile, Jack deals with an upset Katie when Lou's delayed return to Heartland forces him to navigate "back-to-school" prep. Feeling caught in the middle, Amy grapples with keeping a secret when Cass is convinced that Caleb is cheating on her. And Jade is surprised to see a new side of Clay when he stands up for his Aunt Casey.