This is a sequel to the Winter Queen. That is a remake of the classical children's tale (also retold in the first Narnia book). In the Winter Queen, the hero has to regain her love, snatched by the evil queen, and reshape the planet balance (ecological, social, political) alone and barehand. This is were the book catches up with the story.
I loved the first book, and the very ingenious way in which the tale is retold, and the author cleverly delves in ecological, political and social matters as a background to the love story (consider the book was written in the 80's when climate change was still a matter of some crazy treeghuggers), but here the tale is much slower, entangled and a bit repetitive. There are new discoveries, but somehow the magic is not there any more.
The scenery is still bright, and there are clever turns, I don't feel that reading all those pages was worth the trouble. Well, this sounds a bit pesimistic, and those of you who have not read the first part will probably find this novel so magial as I did the first one. Perhaps with a bit of editing, some shorter mix could be the solution.