Fictionalized version of the life of songwriter Maria Grever.

In this period costume swashbuckler, Don Pedro de Rivera, the rightful owner of a Spanish castle seeks to reclaim it from an occupying Moorish Caliph. Don Pedro’s accomplice is Juan Ponce de León, who intends to steal the "Rose of Granada," a rare gem owned by the Caliph, which supposedly contains a rare essence that ensures eternal youth.