After Twilight is assassinated by a changeling, Celestia has had enough and declares war on the Changeling Kingdom. 4 years later the two sides are still at war and neither side is giving up. Rainbow Dash, the captain of Equestria's front line, wants nothing more than for the war to end, but from the looks of it, this war will last for decades.

Although luck seems to be on her side as an unseen Sniper shows up and helps her out in different situations.