In every narrative there exists a kind of deconstructive logic that is formed by the contrast between components of the narrative structure, namely, events and plot. Concentrating on each of these components creates different readings. Due to its tragic genre, the tale of Rostam and Sohrab must lead to disaster. This feature turns events towards specific plot structure, and therefore, it is implied that the events are laid according to the intention of the author and in line with genre of tragedy; hence, the outcome of tragedy becomes inevitable. On the other hand, logic and probabilities formed in the text because of chain of events implies that the logic behind events led the story towards a tragic end. Based on this paradox, an attempt is made in this article to study this conflict in the tale of Rostam and Sohrab to analyze the plot and its semantic and structural consequences. Weaknesses of the events, boldness of the plot, poor causal relations, rising action in order to compensate for the semantic fallacies, justifying causality of events by fate and determinism, rising suspense and plot deconstruction are among the consequences and techniques formed by the deconstructive tension between the narrative and the plot in the tale.