Remember your promise, Sir Gawain; next year I will cut your head off in a single blow. On New Year's Day you must look for a secret place called the Green Chapel. We will meet there and I will use my axe on your neck!
About a year later...
Why don't you stay here with me and my wife and rest until New Year's Day. Then I will tell you how to get to the chapel.
The Green Chapel is not far from here. You have almost arrived But it's cold outside and it's almost Christmas.
This will protect your life if you are in danger.
I kept my promise. Why don't you cut my head off?
You didn't tell me about the magic belt. I will let you live but you must live knowing that you wanted to use magic to save yourself.
Don't you recognise me? I am the lord of the castle. Yes, you are a brave knight. Sir Gawain, but you are not an honest one.