Nobody knows what horrors lurk in the bowels of the city. The sewer police work hard to keep it that way. For Lieutenant Wilson Jericho, Hell is real: and it's in the sewers of the sprawling city Megalopolis. As an officer of the Sewer Police, he's responsible for ensuring the bowels of the city are kept running smoothly. Disgraced from his position above ground and now an officer in the Sewer Police, Lt. Jericho thinks he knows everything there is to know about what lies beneath. But scientist Sandra Yeatman is determined to discover the truth behind the legends, and something is threatening to crawl out and rip the city apart...