Prologue:
The demon rushed through the dark wooden beams creaked, almost as uneasy as he was. Their was a storm coming. He wasn't supposed to be out of his room after curfew, but a simple rule like that was nothing compared to what he was about to do.
This is the night of the great escape he thought. I will free the demons. The Conquerer will never have power over us again.
The demon slowed down as he got to the far door. The door that led to the room with the one weakness. He slowly opened the door. It creaked slightly, and a stab of fear went through him - if he failed, he would let down a whole army of demons. He couldn't fail.
The demon slowly creeped into the room. Shadows covered the walls. It was bare, except for an object on a smooth marble pedestal in the center of the room. The demon held his breath. This was the real reason why this room was special. The reason that had taken months just to find out just what it was. The reason that had spurred the painstaking plans of escape. The reason that had enslaved so many of the demons kind, and the reason that would free them. The Stone of Shadow.
It was a small, black, orb, seemingly made of obsidian. It gave of a harsh glow, throwing the corners of the room into shadow. It was the same size as the Shikon Jewel, and some believed that it was even more powerful. The demon just needed to destroy it... and all of The Conquerer's demon army would be free.
His hand reached out towards the stone. His finger's were about to close on it, when a hand reached out of the darkness and grabbed his arm. He froze.
"Why are you here in this room, so long after curfew?" Said a voice. "You know you're not supposed to be here. Were you disobeying my orders? No. No one disobeys me."
The demons scream echoed through the castle walls, and then faded, till there was no sound left to be heard.