A letter from author A. K. Yearling invites Twilight Sparkle and Rainbow Dash to visit the nearby nation of Maretonia. Their friend and fellow Daring Do fan Quiver Quill is invited along for the ride. But what seems at first to be a simple trip to meet a famous author turns into an adventure as Quiver faces not only a great danger to the world, but also his own courage and self-worth.