Ponies have spread to the stars thanks to advances in technology. In the advanced and luxurious Solar Explorer, Celestia travels to the first extra-solar colony world set up by her little ponies. Unfortunately, events elsewhere in the galaxy, unknown to them, have set in motion a cycle that has been repeated for countless eons… the reaping of sentient races. A Reaper dreadnought confronts the Solar Explorer, intent upon indoctrinating the leadership of the ponies and bringing them to heel.
Said Reaper quickly learns exactly why Celestia has earned the title Unconquered.
A Mass Effect crossover oneshot.