The time has come. A massive asteroid is hurtling toward earth and will wipe out all life when it hits. The Lambs of God are preparing to slaughter the Orange Pact communities. And Captain Chris Jung has been tossed into a mundane alternate reality where the Shift never happened to languish in a soul-sucking cubicle while his counterpart from that reality awakens in a world sundered.

Jamil, the organic computer, has a plan that could save the world in both realities: the Shiftiverse, where the Shift happened, and the Mundaniverse, where it didn't. Part of that plan requires that Rita Luevano venture to the furthest reaches of no man's land, Cambridge, Massachusetts. Somewhere within herself, Rita possesses a knowledge acquired from her Mundaniverse counterpart that could be the key to humanity's survival. Accompanying her is Chris Jung from the Mundaniverse, who finally gets away from the office like he always wanted to, just not in the way he imagined.

Meanwhile, Meredith Jung and Ezra Rothstein prepare the Orange Pact for the inevitable onslaught by the Lambs of God while the interim leader of Monticello threatens to undermine the alliance. Despite knowing the end is coming, Meredith rallies a final stand against their oppressor. Mundaniverse Chris will be called to fight

for his life while Shiftiverse Chris, lost in a world without Vicious Rabbits, will be called to be a warrior once more. And Rita will discover that saving humanity means more than simply saving the world from annihilation.

Chris, Rita, and Meredith have been on a journey that began long before the world came crashing down, a journey that leads to the moment where the fate of the entire planet in both realities coalesce. Across the span of the quantum divide, each must find a strength hidden in a shared past.