Since the very conception of the European integration, there has been one core question that has attracted much attention and yet it remains contested and in a way unanswered till present. What is the legal nature of the European integration - a query about what integration stands for (the descriptive dimension), how it is to be explained and construed (the explanatory dimension) and eventually what it should stand for (the normative dimension). With the lapse of time, and as integration has evolved, various legal, political, economical and even broader intellectual streams of mutually shared beliefs, we should call them narratives, have emerged all offering their own and separate visions of what constitutes the most appropriate answer. Among them, however, the constitutional narrative has come out as a sort of master or dominant narrative whose answers have reached and persuaded the widest circle of influential stakeholders with the greatest impact on the social construction of the European integration.