Whenever Shadow is placed in the real world__ there is a opening to another. If the shadow appears at morning, then the gateway will guide you to a open sky world. Creatures all dress in white, with white wings and light. Others may call it heaven, others may call it paradise, and other a oasis. But pureness and innocents is growing there. It the shadow appeared at sun set, it would get you in cave existing world. That is surrounded by fire, lava ugly, and horrified creatures. Some would call it hell, others underworld and a few a collapsing world. More gateways may open to another reality, it always depends the shadow, the hour, the season and the words that are used. But in our world, it never happened any more. There were few that could travel through those gates but no exists any more.
The same isn't valid at others worlds. There are still creatures that can sneak through the shadows and trip from to world. How many times haven't you hear about someone seen a ghost or a spirit, or someone seeing a demon or an angel. The reason it happens, are those gate ways. But now the question raises?
Aren't those gateways guarded or controlled by no one?
Yes they are. There is a world, were all the spices exist and can live there. There are the rules that control those gates. For someone to pass through, it only can happen at midnight under full moon with the shadow book and only with it.
The Shadow World, is an ancient world of powerful magic, real deities, and shades of grey between good and evil. The world is home to hundreds—or perhaps thousands—of cultures that run the spectrum of technology from Old Stone Age through modern one. Creatures both fantastic and horrible call the Shadow World home and keep it wondrous… and dangerous. Invisible flows of magical energy, the Essence, cross the world interfering with travel but also providing power to those who can manipulate it. And to those who can control the gates.