Tom cannot resist the forbidden allure of what was the heathen city of San Francisco, sunk into the sea by the gods centuries ago. But when his defiance brings down the wrath of the gods, he finds that they are actually artificial intelligences.

Now, only he can follow the terrifying, mystical Prometheus Road to a face-off on a virtual reality battleground--with enemies that are half-human, half-machine--and where war-faring computers demand Tom's destruction.