I love remakes, especially when they are fan made and not a companys effort to make easy money with a well known franchise. I never played the original Kings Quest series (was more into Leisure Suit Larry at that time) but enjoyed the remakes that have been released so far. If you did not know, there are also remakes of Kings Quest 1 and Kings Quest 2 availabe at the website of ADG Interactive. (free of course)

I can´t say much about the story, the following excerpt was taken from wikipedia:
In King’s Quest III, the story moves away from Daventry and King Graham to the land of Llewdor, where a boy named Gwydion is being kept by the wicked magician Manannan. Gwydion was kidnapped from Daventry by the magician when he was young, and this adventure tells the story of his journey back to Daventry.
Kings Quest III Remake Homepage

Old adventures never die. They only get remade.
An amazing remake, indeed! Mind you that (according to me and at least two more gnomes) KQ3 is the second best from the whole King’s Quest series. KQ6 is of course the absolutely best!
I have played the first two King’s Quest games and I must say I enjoyed them very much. Its quite challenging to navigate and try to find the items. I must say no matter how much I try I can never get full scores…..I must be doing something wrong or I just need to stoping trying to get the short cuts.
Anyway, Im hoping to play Kings Quest 3 too and continue journeying with King Graham. I must I love the voices as well