We spend most of the time with the eight angelish people and their few cohorts. (We are a bit confused why they seem so very much like 21st century people.) They're a surprisingly complex lot; there's even a Romeo-and-Juliet-ish love story between the two sides. It's very much *not* a Good-vs-Evil thing; everyone but the North Star is approximately good or so.
Downside: the writing is somewhat awkward and the plot more motivated by coincidences and/or prophecies than I prefer. The characters don't make sense as the cosmic beings they are. The angel-equivalents have daily tasks about saving humans from hurricanes and stuff, which are utterly unpersuasive and don't make much sense in context. (Like, why do so many humans die of natural disasters if there are angels working to save them? Why do humans count for anything in the cosmic scheme of the book? Unclear.)
This is book 1 of four, so there's plenty of time for stuff to get explained and resolved.
Three stars out of five (but one of them is adulterous and rebellious).