Giremelanz follow. Arthur's court comes to the Castle of Wonders to witness the combat. Gawain and Giremelanz are reconciled, the latter marries Gawain's sister, and Gawain himself sets off to search for the Grail. [Adventures then follow which correspond to nothing in Chrestien or Wolfram, in which Gawain wins talismans destined to aid him in his search.] Gawain sets forth on his quest accompanied by Kay, Lancelot, and Calocreant. They part at crossways. Gawain comes to the sister of the magician (anonymous in Chrestien, Klinschor in Wolfram, here Gansguoter) of the Castle of Wonders. She bids him take heed, if he wish to see the Grail, he be not overcome by sleep, and for this that he drink not overmuch; as soon as he saw it and its accompanying damsels, he was to ask about it. If he neglected this, all his past and any future toil would be useless. On his way to the Grail castle, the hero meets with all sorts of dangers, and obstacles, and wonders; amongst others, passing the night in a castle where he is tended by invisible hands. After month-long wanderings he meets with Lancelot and Calocreant, and learns that Kay, in a vain attempt to penetrate to the Grail, has been flung into prison. The three comrades then come to the Grail castle. They are led into a hall which passes in splendour aught earthly eye ever saw. The floor is strewn with roses, on a bed lies an old man in gold-embroidered garments, and watches two youths playing at chess. Towards night the hall fills with knights and dames, a youth enters bearing a sword which he lays before the old man. Gawain is pressed to drink; but refuses, not so his two companions, who straightway fall asleep. Then enter two damsels bearing lights, followed by two knights with a spear, and two more damsels with a "toblier" (? tailleor, plate) of gold and jewels. After them comes the fairest woman ever God created, and with her a maiden weeping. The spear is laid on the table, by it the "toblier" wherein are three drops of blood. In the box borne by the fair lady is a piece of bread, one third part of which she breaks off and gives to the old man. Gawain recognising in her Gansguoter's sister, stays no longer, but asks what these wonders mean. Straightway knights and dames all with mighty shout leap from table, and great joy arises. The old man says what he has seen is the Grail; none saw it before save Parzival, and he asked not. By his question Gawain has delivered from long waiting and suffering both those which are dead and those which live. The old man himself and his companions are really dead, though they seem it not, but the lady and her damsels are living; for their unstained womanhood God has granted them to have the Grail, and therewith yearly to feed the old man. All Gawain's adventures latterly have come from the Grail. Now he has ended all, he is to take as prize of his knighthood the sword which will help him in every danger. After him no man shall see the Grail; further concerning it he must not ask, nor may know more. At daybreak the old man's tale ends, and he with his whole court vanish, leaving only the lady with her five damsels. [After releasing Kay, and undergoing other adventures, Gawain returns to Arthur's court.]
