It's a CYOA of course! It's sort of like a backstory to those CC Tumble stories I wrote a while ago.
Essentially the plot follows Tumble as he grows up in the world of orcs, with the threat of the Mannate Empire (humans) looming over them. Their crusades against the orcs come to an end, but then Scourge and his otherworldly forces show up and wreak some havoc on the Empire.
And not to give too much away but Tumble kind of gets swept up in the middle of it, and pretty much has to decide whether he'll play the role fate has dealt him or try to get away from it all. It's either help the Empire that has swallowed up his life and defeat Scourge, or leave the Empire to go to waste, and the rest of the world with it.