The war has spread and it now consumes the entire solar system. Blood and violence are pervasive as the fledgling Republic tries to hang against those who oppose it. Many want to return to the old color based society while others view this conflict as an opportunity to rise to power, so there is no shortage of combatants available. Like the last book, Iron Gold, this story is told from the perspectives of the same PoV characters (plus Mustang this time) and each of them experiences this conflict from a different location within the solar system. With such a complicated set of battles it will take you some time to get your bearings, especially if it has been a while since you read the last book, but once you get everything sorted out this is another wild ride in a series that remains surprisingly compelling.