I like the idea. You should write it. I think what I particularly like about it is the spirit world kiss on the eye. It reminds me of the beginning of the Snow Queen. --A piece of glass gets into Kay's eyes. He disappears with the Snow Queen because his sense of right/wrong/beautiful and ugly have been altered and Gerda goes off to rescue him.

I see great potential. And the only way to write an epic is a small piece at a time. So don't think whole thing. Think chapter one.