Princess Twilight Sparkle is more than eager to seek out the keys to the mysterious chest from the Tree of Harmony but there is another pressing matter at hoof. Upon hearing of an attack on one of the Royal Guard Watchtowers, Princess Celestia calls upon Twilight Sparkle and her friends to investigate. When Twilight learns that they will be heading towards territories outside of Equestria, she finds herself wondering what the true purpose of their mission is. And what makes Twilight more curious is why Celestia specifically requested that Zecora accompany Twilight and her friends into lands unknown, unexplored, and unvisited by ponykind for hundreds of years.