Discover a heretofore untold part of Equestria's storied history introducing an all-new villain!When a chance purchase leads to a legendary quest for a missing constellation, the ponies reach for the stars and find themselves in the path of their most galactic villain yet... the chaotic Cosmos! They'll get help along the way from Big Mac, Zecora, and the Cutie Mark Crusaders but it's going to take a little bit of magic, and a lot of friendship, to defeat her in this thrilling