I'm not good at synopsis, so I won't go there - you can read the editorial reviews for that.
Because I'm on a budget, I've been waiting breathlessly for this to come out in paperback, and it was well worth the wait! I've been a De Lint fan for years and he has yet to let me down. I love his earlier Newford stories, and the way he combined the Celtic/European folklore like in many of the short stories, and the Native American folklore like in "Somewhere to be Flying" is breathtaking! And there IS a very obscure, fleeting reference to the Crow Girls (my favorite De Lint characters of all) but if you're not looking for it (like I look for them in all his Newford stories) you'll miss it.
The new characters he introduces in this book are so well developed that they feel like old friends right away. And the cameos from the regulars (Jilly, Sophie, Geordie, Angel, et. al.) made me feel like I was visiting a familiar, much loved place.
I will agree with several other reviewers that if you've not read any of the Newford stories, you really should begin with the short story collections (Dreams Underfoot <esp this one>, The Ivory and the Horn, and Moonlight and Vines) for the reasons in the prior paragraph.
Yes, it is very familiar territory, but when you love a place, don't you love to keep going back? All in all, a great read, and I can't wait for The Onion Girl (Jilly's story) to come out!