"Siegfried" is the third of the four operas that comprise Wagner's epic tetralogy "Der Ring des Nibelungen" ('The Ring of the Nibelung'). Siegfried, raised by the evil dwarf Mime, discovers that he is the son of Siegmund and Sieglinde. He must negotiate betrayals and dangers in a landscape of dragons and magic in order to kill Fafner, who has the Ring, as well as Mime, who has designs on it. Finally, in music of resplendent drama, Siegfried, the hero who knows no fear, can penetrate the ring of fire to awaken the sleeping Valkyrie, Brunnhilde.