This paper examines how the corruption heritage of South-Eastern European sport can be used as content for educational strategies designed to improve the ethics and integrity in today’s sport. Hidden or dark history is useful when considering an education for a sustainable development approach to improving athletes’ moral skills. In education, examining mistakes can be a useful tool for preventing their recurrence as they provide examples for study and content for evidence-based learning. At the same time, it is a useful process, aiming to develop critical thinking and the decision-making skills in the area of sports. This paper provides examples on how narratives can be used in the field of sport moral education and what patterns reflecting the lack of integrity in sport can be identified. Because it has perpetuated and altered the image and principles of sports competition, diminishing trust in sport sustainability, it is important to identify how this effect can be approached from the perspective of the education for sustainable development (ESD), as applied to the area of sports. However, it is essential that sports integrity be valued by society and that all sports actors (athletes, coaches, officials) promote ethics and fair play.