'The Elixir of Life' revolves around the "Kingdom of Elexir" which belongs to the elves (German mythological creatures).

Here's an extract from the book:

" His vision blurred. He rubbed his eyes; he couldn’t pass out, now, in the middle of nowhere. The horse stopped sensing his discomfort. His head ached. He shook his head, trying to stay awake but he couldn’t. His body started to ache.
He lost control of his limbs. He was breathing hard.
What is happening to me? He asked himself. He started to shiver. He fell off the horse.
It nudged him. He coughed. He tried to sit up but his each try went in vain. He was in the middle of nowhere and he couldn’t die there."