Akira, a teacher from Tokyo, has just arrived in a small rural town to begin his new job. Soon after arriving, he meets, and begins to fall for, Miki, a papermaker and part of a large and unusual family. When he learns of an ancient legend that the family carries the curse of the Inugami, or Dog God, he brushes it off as silly superstition. After a series of mysterious deaths, however, the townspeople begin to grow restless, and Akira must confront the truth about Miki and her family.

The year is 2016. The place is New Port City. The Tank Police are still waging a desperate war on crime, and their tactics are still highly questionable. Mayor Weatherby is trying to pass a bill banning certain weapons from the city, which makes her a target of the Dai Nippon Geiken Corporation, who are now manufacturing mobile weapons that even the Tank Police may not be able to stop. Dai Nippon Geiken is also connected with the murder of Leona Ozaki's former partner, Charon Ishira, making the battle all the more personal for the Tank Police's number one officer, who will stop at nothing to avenge her partner. But can she pay the high price revenge calls for?