Hermaeus Mora is leaving from his realm, Apocrypha. He assigns the Dragonborn to guard the realm, only warning him about the black book, 'Equestria'. However, the cursed black book appears from the green mist, and although warned, the Dragonborn read it, thus transporting the Dragonborn to a parallel universe… Equiinus. There he must set off to venture across this new and unknown land to find his way back to Mundus. But… how?