Morning Glisten isn't really a good filly. She fights with other foals, and she doesn't really trust adults. So when three Princesses take an interest in adopting her, she'll need to become someone else to win their love.
Trapped in a time loop, Sunset Shimmer struggles to come to grips with her own conflicting feelings and everything she thought she knew about friendship.
After the Dazzlings have been defeated and the mystery of Anon-a-miss has been solved, Sunset Shimmer spends her Hearth's Warming Eve looking back on who she was before, what she has lost, and what she has gained.