The Great Collapse Era. In the near future, civilization has collapsed due to a large-scale disaster and war, and has one foot in the apocalypse. Detective Zoe, a young girl struggling to maintain security, gets caught up in mafia trouble and saves an elderly woman. But then a giant puppet weapon released by the Mafia's pursuers appears... Meanwhile, the old woman also has some kind of disturbing secret. ......?

In the year of 37th year of Heisei (37th year of the Heisei era). The "Special Economic Zone Bill" was enacted to stimulate the economy, and foreign communities sprang up all over the country. As a result of each community's pursuit of its own interests, public safety in the area continued to deteriorate. Amidst such instability, one assassin was making a name for herself....