On the night of Christmas Eve, the CMCs encountered the ghosts of Apple Bloom's parents, who warned them that they will be visited by three ghosts if they don't confess to being Anon-a-Miss and make things right.
Twilight visits her friend Somnambula, and discovers that she is not from Equestria but from Zebrafrica and that she had a pegasus friend in her childhood.
Rainbow Dash's son Storm Streak is mad that he cannot enjoy a ride at the Ponyville Fair due to his age, so he searches for a mysterious artifact that he believes can turn him into an adult.
After over one thousand years of banishment, the three sirens have been freed and taken over the kingdom of the Hippogriffs. With all resistance broken and shattered, they look to spread their voice and song further abroad. Zebrica calls.