Once upon a time, in the magical land of Equestria...

In the years following the end of the Long Winter, the pony tribes of Equestria have made great strides in building a more united and prosperous nation. Trade agreements, political alliances, defensive pacts, and marriages of state, and even enduring friendships, have all served to bring the estranged tribes into a new era of cooperation and-dare we say it-harmony.

That is, until a little filly goes for a walk, and makes a new friend...