Don Giovanni is a young Spanish nobleman, notorious throughout Europe as a seducer of women. He is assisted reluctantly by his manservant, Leporello. One lady, Donna Anna, pursues Giovanni from her house, rousing her father the Commendatore, who challenges Giovanni to a duel and is killed. Donna Anna and her fiance Don Ottavio vow revenge on the unknown assailant. Another lady, Donna Elvira of Burgos, claims that Giovanni is her husband and has followed him to Seville, where she foils his seduction of Zerlina, a peasant bride-to-be. Elvira joins forces with Anna and Ottavio and, disguised as masked revellers, they attend a ball being given by Giovanni, at which Zerlina and her bridegroom Masetto are also present. Once again, Giovanni tries to seduce Zerlina but is foiled amidst general condemnation.