The hero Siegfried comes to the Burgundian court at Worms to win the princess Kriemhild, and earns her by helping her brother, King Gunther, win the formidable Brünhild, queen of Iceland, as his own bride. A quarrel between the two queens ends in murder, and in the second half Kriemhild, now the wife of Etzel, the Hunnish king, waits years for her revenge.