These are the ordinary days in the extraordinary lives of Cozy Glow, Rumble, Flurry Heart and their friends as they learn, play and grow under Twilight's tutelage.
Castling is a special move in chess where a player’s rook ends up just next to the king. Thanks to a friend’s kindness, a calculating young filly would end up closer to her princess than she ever thought. But can a filly like Cozy Glow be changed?
Not all changelings are fit for life in a hive. But that doesn't mean they're capable of life outside it, either. Join one such changeling as he tries to find his place in Equestria, and what the difference is between survival and living.