A Fallout: New Vegas-MLP crossover. Two violent sociopaths fight with no true allegiance, attempting to temper the Wasteland and gain power and fame for themselves at the cost of everyone around them, maybe even each other.

Equestria has been attacked. Twilight Sparkle and Rainbow Dash both rush to join the defense, but as the rules of war change and objective's shift, how will our ponies deal with the new reality of a brutal hit-and-fly war of attrition?