Is this real?

A man wakes up in a mysterious place with strange thing's happening he wants to know what's happening he fears for his life every second. Until one day he thinks of an important question, is this real? He soon comes across a thought a what if thought on how to know. On his way to find answers to his what if question, He comes across beasts of all sorts that wants to kill him,and even becomes friends with one that wasn't so murderous. But that won't help him on his question. How will he learn the truth? And how will he be able to bare it?