Everyone knows Neftin Prog, one of the most feared cyborg criminals in the Polaris Galaxy. Yet no one knows how exactly he got his famous robotic body. Nobody except his sister, that is.

A new prophecy has been proclaimed. Carter and Sadie find themselves in more trouble than they thought they could have met. A new evil is rising, and the only way to defeat it is to bring back the Egyptian gods. Sadly, the only way to do that is to find The Sign, but will the risk be worth it? Or is the Ouroboros a worse threat than any of our heroes had faced before?