Lovers have their reasons. To Twilight Sparkle, the reasons she loves Celestia are perfectly obvious. And to Princess Celestia the reasons why she can't love Twilight back are equally obvious.
A battle against Sombra's forces turns sour for Rainbow Dash, and she gets captured. Can she hold on to herself, or will she become one of Sombra's lackeys?
Ever had one of those days when you wake up to find you've accidentally switched places with your counterpart in a world where you and all your friends are stallions?