A small Michigan town is transported to a strange and harsh new reality. I really enjoyed this book, despite at first being disturbed by how similar it seemed to Flint's 1632 (which was published later.) The similarities soon stop, and the book as a whole is much darker and heavier than Flint's series. After waking in the new reality, the people of Two Rivers are soon host to an occupying force intent on stripping the populace of its tech and information, in order to advance their military and theocratic agenda. This is a great book, highly recommended to fans of alternate reality in the tradition of Turtledove, Stirling, Flint, and Birmingham.