Actions have consequences.
Bob has always been willing to accept responsibility for his own, but now he's being forced to assume the burden of others. Reduced to being merely human, he's being pursued across the galaxy by a rogue AI, a planet of fanatics out for his blood, and his own people. His many enemies think he's now weak, vulnerable, and ripe for exploitation. They've forgotten that Bob has spent centuries learning how to deal with opponents more powerful than himself.
It's time for Bob to remind them who they're dealing with as he investigates a mystery that threatens humanity.