Die Walküre ("The Valkyrie") is the second of the four operas that comprise Richard Wagner's "Der Ring des Nibelungen" ("The Ring of the Nibelung"). The opera concerns the god Woton's son by a mortal woman, Siegmund. Siegmund flees his foes and ends up in the house of Hunding. He falls in love with Hunding's wife, who turns out to also be his long lost sister. While at first Woton supports the relationship, he is forced to have Siegmund killed since he broke the gods' laws against adultery and incest.