Yes, another King Arthur scenario, that's what I thought when I downloaded this. There isn't much to say about this scenario, since it was extremely short and didn't have many contents.
First of all, when making a King Arthur scenario, you have the chance to design a very comprehensive scenario. The quest of the holy grail is so detailed, contains so many quests and captivating stories that it's possible to make something extraordinary out of this. But the author failed in making the story come alive in a scenario.
The quest is quite superficial, it only says "go destroy that castle and get me the grail". Like I already said, with the tale of King Arthur you could do a lot more. Anyway, the funny thing is that, when Arthur has to escape, you have to give the Knights of the Nee a sacrifice, a shrubberry. Don't know what those guys will do with that.
The map design was really bad, the author could put a lot more effort in this, like adding some animals, gaia stuff, mixed forest,... The map has only a few forests, two roads and a grassy plain.
The worst point of all is balance. It took me maybe 15 minutes to finish this, and I didn't lose any units, and only King Arthur lost some HP fighting two champions. And with all those resources I could easily destroy the Teuton village, I only needed 10 longbowmen and 2 trebuchets.
But anyway, if you feel a bit bored and don't have time to play something long or hard, you should try this. It isn't that bad, but could be done a lot better.