Amy, Lou, and Scott are off to Australia to visit their father's farm. Unlike when their father came to Heartland, Amy is having difficulty connecting to her new stepmother and half-sister, while Lou seems right at home. Amy turns to the horses to give herself the sense of usefulness she is used to feeling at Heartland, but the horses don't seem to respond to her, and some of the stablehands are not welcoming either. Eventually Amy learns that she needs to offer herself too.
Amy seems to take a long time coming to this realization. She persists when one of the stablehands is aloof about learning new remedies, mostly because of Amy's attitude, not because she doesn't want to learn about the remedies.