Come around and see the mixture of two stories. One were ponies start meeting changelings through the lenses of six ponies now, turned changelings, and another one of queens facing the changing of history through their eyes.
Changeling Twilight Sparkle and her number-one assistant, Sunset Shimmer, try to study magic without learning any wholesome lessons of friendship. They fail.
After the royal wedding, a new changeling hive makes its presence known and wishs to open diplomatic relations. Twilight decides to use this opprotunity to learn more about them, but ends up getting far more than she bargined for.