Twilight, Dusk and their friends travel to a mirror version of Equestria and encounter a good version of King Sombra and Queen Oscura and evil versions of Princess Celestia, Prince Solaris, Prince Artemis and Princess Luna.
Twilight, Dusk and their friends travel to a mirror version of Equestria and encounter a good version of King Sombra and Queen Oscura and evil versions of Princess Celestia, Prince Solaris, Prince Artemis and Princess Luna.