"...'By heaven, sir, your request is strange; / But since you have come here for folly, you may as well find it'" (Lines 105-106).
While at a New Year's party, a random knight shows up proposes a challenge.
"'If any man holds himself, here in his house, so hardy, / So bold in his blood-and so brainless in his head- / That he dares to stoutly exchange one stroke for another'" (Lines 67-69).
When the Green Knight explains his plan, no one says anything but then Gawain accepts the challenge in place of King Arthur.
"Arthur lay hold of the ax, he gripped it by the handle, / And he swung it up over him sternly, as if to strike" (Lines 112-113).
"'I beseech you, Sire,' he said, / 'Let this game be mine'" (Lines 123-124).
"'Therefore if you seek to find me, you shall not fail. / Come or be counted a coward, as is fitting'" (Lines 186-187).
Gawain chops the head of the Knight off, but the Knight picks up his head and rimeinds Gawain to find him in a year and a day.
"Sir Gawain laid hold of the ax and hefted it high... / And then, swiftly, he slashed at the naked neck" (Lines 152-154).
It was soon time for Gawain to start his search. On his way, he meets a lord and his lady. Gawain stays with the people in a castle.
"Gawain leaves on his quest to find the Green Chapel and fulfill his pledge... he comes upon a splendid castle" (216).
"The lord proposes that he will go out to hunt each day while Gawain stays at the castle. At the end of the day, they will exchange what theey have won" (216).
"While the lord is out hunting, the lady attempts to seduce Gawain" (216).
The lady seduces Gawain and kisses him three days in a row. The last day, she gives him a green satchel. He refuses at first and then accepts. He does not tell the lord about it. She claims it can keep him safe.
"'I'll give you merely this sash that's of slighter value'" (line 210).
"But again he said no, there was nothing at all he could take, / Neither treasure no token..." (Lines 217-218).
Gawain leaves the castle and finds the Green Knight. The Knight claims he did not kill Gawain the first or second time because of his loyalty in the first two days with the lord. The third blow gives him a tiny cut because Gawain was unfaithful to the lord. This interaction proves that the Green Knight was the lord.
"'Hit me, hero! I'm right up to here with all your threats!/ Is it you that's the cringing coward after all'" (lines 292-293).
"'That sash you wear by your scabbard belongs to me; / My own wife gave it to you, as I ought to know'" (Lines 350-351).