Derpy wishes to go somewhere relaxing. The Doctor is willing to grant her wish but the unexpected appearance of a unicorn named Twilight Sparkle and the TARDIS unexpectedly taking them 600 years into the future changes his plans.
A look into the humanized world of Equestria, and into the life of our favorite little scholar Twilight Sparkle, years after finding her daughter Nyx in the Everfree Forest Nyx comes to ask the question of how exactly Twilight became who she is today