Applejack finally decides that she needs to write a letter to one of her dearest friends, after the turmoil in her mind begins to get too much for her.
Rainbow Dash has been fighting her feelings about Applejack for a while now, but when Applejack falls in love with somepony else, what will Rainbow do?
As the ponies of Equestria discover a new land... a new frontier, the Earth Ponies decide to make it their own, breaking the chains of slavery to the Unicorns and Pegasi.