When Sunburst discovers the lost journal of Starswirl the Bearded, Twilight becomes obsessed with saving her magical idol from a thousand-year-old prison.

With Starswirl and the other Pillars of Old Equestria back from limbo (where they’ve been trapped for a thousand years), Twilight and her friends must work together to defeat the Pony of Shadows.

When Twilight discovers there's another school of friendship, she and Rarity go to investigate and are shocked to discover that Twilight's idol and Pillar of Old Equestria, Starswirl the Bearded, is enrolled at Friendship U.

As Twilight and the rest of the Mane six struggle to come to terms with the destruction of the Tree and Elements of Harmony, King Sombra sets his sights on conquering all of Equestria.

A villainous alliance unleashes their power on Equestria.