When an ancient magical mirror of unclear function is unexpectedly uncovered on the edges of the Dragon Lands, along with hints that it might be originally of griffon construction, Gallus joins a small party sent to retrieve the mirror and bring it back to Canterlot, hoping to find out more about what it has to do with his kind and why it was found so far from his homeland.
What he learns instead was that the mirror should've stayed buried.
An entry in "The Discovery" Young Six contest.