Nightmare,
Everyone is able to enter this when they sleep, this is a place where you experience something that will make you catch your breath, hide in the shadows, run from something or
cry because of sadness or fear.
Our version of this world is very simple, you sleep, dream about it, and experience the things it has to offer for your tiny weak heart. If you can't handle it anymore, you may leave the world easily by waking up from our bed where we rest. But there's another version of it that is very different.
The World of Nightmare where instead of getting inside using a dream, You are dragged into a portal that will put you physically inside the world. This time escaping is not as easy as the normal one, in order for a person to escape this world, that person must face her fear, once she is able to face all of her fear, then that is the only time she can leave the place with those she dragged in with her.
But the fear that will exist here is not just a part of your imagination, they're just here to make you strong or play with you, this creatures or events will Haunt You, Chase You, Push You to your Limits, Hurt You or even KILL YOU. Which means facing your fear mustn't be taken lightly. One must be careful about facing them because once that person made a wrong move, he or she will die. But that's not it, just like what Sam Clyde said, this world doesn't have a limit, so there are no exceptions.
And now that Shio was exposed to the things that The World of Nightmare has to offer, she is able to experience a lot of terrible things in less than a week.
Experiencing an unexplainable dream, having both of her friends in danger, getting tangled in a Curse that she doesn't even understand and losing both Sam and her sister Karen while she tries to prepare for the worst.
But her story is just getting started, now that she's inside The World of Nightmare, Shio will try her best to survive the challenges the world has to offer. Using a little knowledge gathered from Sam and a Lamp, She will try to find everyone and get out.