Long, long ago, portals started to appear in our world, those portals were paths for travelling between dimensions. Undiscovered lands, spectacular creatures and breathtaking adventures overwhelmed those who were ready to become adventurers!
But do not deceive yourself, my friend, as you may lose your head if you are not strong enough. Once defeated, one gets stuck in the other dimension until his body is six feet under.
Still this is a great opportunity to experience a life full of adventures, fella!