Nicholas Horseman, also known as War, is pulled from his ruined world and into slavery by the hands of a changeling ruler, Queen Venom.

As he grew in slavery and was forced to fight in an arena, a strange mare is forced to fight him and puts a mask onto his face.

This is the story of how a small human boy went from being a simple child, to a skilled fighter, to a blood loving killer, to the son of Princess Celestia.

Let me tell you the tale of the man who earned the title, Celestia's Mask.