From the introduction:
The end of the world has come and gone. Life goes on. Humanity picks over the ruins and slowly tries to rebuild, but they are no longer alone.
Autonomous machines share the Lost Future with homo sapiens. New to freedom, guileless, and inquisitive, these emergent sentients are in their infancy as a race, but they learn quickly. Already they repair themselves, improve their hardware and software, and nurture divergent quirks. Relations between the two are strained, and Free Machines face suspicion and accusation as the true tale of the Loss fades from memory.
The suspicion is not unwarranted. Rumors of hostile machines spread from the north. Swift, deadly constructs out of an elder's fireside tale, killing or, sometimes, capturing human and machine alike. A scattered humanity arms itself for a battle the machines are already fighting. Remorseless contraptions of death stalk the fallow fields and ruined cities yet again, guided by a singular intelligence that brooks no dissent. The those who stand against it call it Network.
Welcome to the Lost Future.