In this article we analyze the keys of storytelling in connection to the usefulness of classics for the management of emotions and the mind in terms of social pedagogy and its application to social psychology. We study the educational use of storytelling and transmedia storytelling for the resources that social technologies of communication and the mind can provide us. We make use of several examples of contemporary transmedia storytelling and also look at the abundance of storytelling of different types that existed in the Middle Ages. In particular, we look at them with the purpose of offering models for social education and social psychology that can overcome national traumas and at the same time propose models to imitate. We pay attention to transmedia storytelling in the narratives by studying some cases of transmedia storytelling from James I the Conqueror’s Llibre dels Fets, King of the Crown of Aragon, a great storyteller himself. One of the examples refers to the conquest of the Kingdom of Majorca (1229), another to the conquest of the Kingdom of Valencia (1238) and a final one to the conquest of Murcia (1266), the latter accomplished by the Kingdom of Castile.