One day, lost in the caves of the ancient Paleolithic, Indiana Jones stumbles upon mysterious cave paintings and writings describing a mythological animal that lived 20 thousand years ago. And five years later, this story resurfaces with a mysterious beauty who dreams of finding the legendary Unicorn Horn... Some argue that this Horn remains from a mythical animal that existed before the Great Flood. Others say it is an effective cure for all diseases. But Indiana discovers that his power is much more insidious and no safer than in the enthusiastic legends.