The present thesis proposes to reconsider the narrative cliche narrative of the folk tales, that of the constant struggle between good and evil, after the analysis of pre-Christian background, hidden behind the superficial structure of the narrative, the real reason for be mythical figures reveals a world that is not the antithesis, but a world of ambivalence. This leads to the inability to determine definitively the nature of symbols and images that grow in fairy tales, but also the ability to create another way of reading fairy tales. The analysis begins by identifying the substrate of the pagan mythical figure of the Romanian folk tales zmeu in a comparative approach, with the help of modern instruments of the imagination. The figure of Zmeu is integrated in a mythical origin where are projected two orders of the sacred: a traditional order that protects the sacred values of the world and an initial order innovation that changes the meaning of the primordial world of the sacred. Between these two orders, the figure of zmeu, as representing the ancient world, conflicts with the figure of the warrior who, representing the new monde.In this conflict, the figure of zmeu is defeated by the mechanisms of history.