When Siegfried and Gunther arrive at Isenstein, Brunhild initially assumes that Siegfried is the suitor, but immediately loses interest in him once he claims that he is Gunther's vassal. With Siegfried's help, Gunther is able to accomplish all the feats of strength; although Brunhild initially looks like she might renege on the agreement, Siegfried quickly gathers his men from his kingdom in Nibelungenland and brings them to Isenstein. Gunther and Brunhild then agree to marry. The heroes return to Worms with Brunhild, and Siegfried marries Kriemhild at the same time that Brunhild marries Gunther. Brunhild cries seeing this however, believing that the royal princess Kriemhild has been married to a vassal. On her wedding night, when Gunther attempts to sleep with Brunhild, Brunhild quickly overpowers Gunther, tying him up by his hands and feet with her belt and leaving him hanging on a hook until morning. Gunther is forced to rely on Siegfried again, who takes Gunther's shape using his "Tarnkappe" and is only able to subdue Brunhild due to the "Tarnkappe" granting him the strength of twelve men. Gunther is secretly present during all of this, and is able to confirm that Siegfried did not sleep with Brunhild. Once Siegfried has subdued Brunhild, Gunther takes Siegfried's place and takes Brunhild's virginity, which results in the loss of her superhuman strength. As a trophy, Siegfried takes Brunhild's ring and belt, which he later gives to Kriemhild.