The series draws upon elements from all five live-action Fantaghirò films, weaving together and reordering various events and character appearances. The central theme throughout the narrative is the evolving love between Princess Fantaghirò and King Romualdo, a bond that transforms and impacts everyone around them. The primary antagonists across the series are the Black Witch and her master, the lord of evil Darken, both of whom are introduced from the very first episode. Various locations and characters unnamed in the films have been given identities in this animated adaptation, such as the kingdoms of Tuan and Dana, which are the respective homelands of Fantaghirò and Romualdo.