Storm of Chaos

This story was written a few years ago, and it was hilariously terrible, so I decided to recycle the plot and write it better this time.
This is a fantasy story. In a world where humanity split generations ago, the Guardians live isolated in the mountains, they guard the mountain's secrets, unaware of the darkness that lurks beneath their feet. Ryan is a half-born-neither fully Guardian nor fully human-haunted by the memory of his little sister Lily, who was dragged away by monstrous beasts a year ago.
But Lily's disappearance is just the beginning.