The origin entries do not describe an invasion.
They describe a schedule.
Earth is not on it as a destination. Earth is on it as a door - a staging world, propped open for something that has been moving through it far longer than anyone has been fighting back.
Somewhere past that door is the sender. Kira and Dax go looking, hunted by three factions who each want them for a different reason, and when they finally arrive they are handed exactly half the truth and a price for the rest.
The price is not negotiable. It is also not survivable in the way they assume.
The architecture holding all of this together is already failing. Power that has always answered turns lethal. And Dax, who has carried the command stack since the day it was forced on him, falls out of it entirely.
He barely lives. What he shared with Kira goes silent.
Three complete books in one volume: Origin War, Sender's Gate, and Stagefall. 118,000 words, roughly eight hours of reading.