The plot was discovered by the faithful Birchlegs and Inga warned of it; for to use such herbs would make the test invalid and subject Inga and her son to opprobrium. But all that Skule and his fellow-plotters could do proved of no avail, for Inga passed through the ordeal unhurt and triumphantly proved, in the legal system of that day, the justice of her cause. How red-hot iron was prevented from burning is a matter which we cannot discuss, and can only say that this ordeal was common and many are said to have gone through it unscathed. We set out in this story to tell how the child Haakon passed through all the perils that surrounded him and grew up to become Norway's king. Here then we should end, but for years new perils surrounded him and of these it is well to speak. They were due to the ambitious Earl Skule, who made plot after plot against the king's life, and was forgiven again and again by the noble-minded monarch. King Haakon's friends sought to put an end to this secret plotting by arranging a marriage between the young monarch and Earl Skule's still younger daughter Margaret. But this did not check him in his plots, and he finally set sail for Denmark to try and get aid from King Valdemar. He was ready to agree if the kingdom were won to reign as a vassal of the Danish king; but when he got there no such king was to be found. He had been captured in battle five days before, and was now with his son in a prison at Mecklenburg. The disappointed plotter had to sail home and pretend to be the king's friend as before. For years Skule's plots went on. He took the field against a new horde of rebels called the Ribbungs, but he took care never to press them too closely, and they long gave the king trouble. For more than twenty years Skule thus continued to plot and plan, the king discovering his schemes and pardoning him more than once, but nothing could cure him of his ambitious dream. In the end, when he was nearly fifty years old, he succeeded in having himself proclaimed king and in sending out bands of warriors who killed many faithful friends of King Haakon. He tried to conceal his purpose until he had gathered a large force, but one man escaped the vigilance of his guards and brought word of the treachery to Haakon. The latter, seeing that he must check this rebellion if he wished to sit safely on his throne, at once took to his fleet, sailed southward with the utmost speed, and rowed, under cover of a fog, up the Folden fiord to Oslo, where the rebel was. He had been carousing with his followers the night before and the wassailers were roused from their drunken sleep by the war-horns and ran out to see the king's ships driving in towards the piers.