Old Jacques, and young Vic, his grandson, share one passion - the history of Cro-Magon man and the Neanderthal tribes who once shared their territory in France. After a life of successful business ventures, Jacques decides to tell his grandson on how he became one of the wealthiest men in France.It has all to do with the mysterious way of life of the Neanderthal man.Earlier, old Jacques Poiron was an amateur archaeologist and discovered a cave where a group of Neanderthal people met a horrifying death; their strong spirits, still present in the closed cave, have a unworldly influence on the Jacques' mind.Jacques learns how to enter the world of his dreams and builds a town for himself there, stone after stone. Being there, roaming the streets, entering the palaces, he soon learns he can predict the future...and that is how he made his fortune.Then everything changes when Jacques is nearly killed and forced to give his secret away. Soon strangers pop up in his world of dreams and his real world and that of his dreams unravels when someone is murdered in this dream world and actually is found dead in a French police cell!