For thousands of years, Argaz had been the mightiest guardian of the legendary city of Atlantis. Though his mechanical body is prone to rust and his mind slowly crumbled--his memories fading away--he stands ever vigilant, working dutifully until his service reached its end.

But on his final day as Atlantis' solitary sentinel, a mysterious visitor arrives, threatening to not only intrude upon the ancient city, but on everything Argaz believed in... his past and the possible future.