In the blink of an eye, the constellations in the night sky are replaced by unfamiliar stars. Earth and the Moon are now in another star system, around a star identical to our sun. We are not alone. Seven other versions of Earth, plucked from alternate universes, share the same orbit. One of these worlds comes from a very dark timeline: the Axis powers won the Second World War, and they have the means to strike our planet. How will humanity react to an event unlike anything in history? A diverse cast of characters grapples with the fears, challenges, and opportunities of a new era.