"El Cid" is a Spanish historical biopic drama series that revolves around Rodrigo Diaz de Vivar, a Castilian nobleman who is fearless and has a big heart. As the story unfolds, he becomes not only a renowned warrior in medieval Spain but also a true folk hero. However, despite his noble lineage, his life is filled with trials and various challenges. Fortunately, his inner nobility helps Vivar stay true to his principles.