"In every war, there's an enemy.

But peace demands time and patience. It’s as fragile as a butterfly’s wings and can be broken in a few seconds. When restored, it isn’t stronger. It remains precarious, on a knife edge. The high-wire walker of life.

We don’t fight for the fight. We fight to fortify peace. They want to shake its foundations; they want it to crumble because they find their wealth within chaos. They find a feeling of power within tears and blood. That’s the difference between them and us. It’s not winning that makes us stronger. It’s not losing that makes us weaker. It’s to be able or not to make a difference."

Equestria's main enemy is its environment itself. In the Northernmost city of the continent, Ponyville, winters are months-long and the sun feels like a legend.

The Militia, an official organization composed of highly-trained fighters, roam Equestria looking for offences to punish. As the Captain of Ponyville's Militia, Rainbow Dash has heavy responsibilities weighing on her wings. She has to deal not only with her own duty, but also with friendship, personal ordeals and love.

When a new enemy appears and threatens not only Ponyville, but all Equestria, she is going to be challenged more than she ever has been until then.