Soon after the beginning of the game's introduction, the player begins the investigation in the Anekbah sector. He uncovers information that suggests the serial killer he is looking for is in fact not human but actually a demon. When members of an apparent underground, anti-government movement contact the player and confirm his suspicions, the investigation deepens and uncovers information; one of Omikron's chief police commanders, Commandant Gandhar, is a demon pretending to be human and lures human souls into Omikron from other dimensions by way of the Omikron video game. Kay'l 669 asking the player to help him was a trap: supposedly, if the in-game character dies, the real human playing the video game will lose their soul forever. Despite many assassination attempts on the protagonist's life by other demons working behind the scenes, the player destroys Gandhar with supernatural weaponry.

The game is set in futuristic computer "supernetwork" called Project-K where much of the data flow is controlled by an AI named Eden. Eden has become overwhelmed with the amount of knowledge gathered on the network, causing her to doubt her existence and enter a shutdown sequence, which would create catastrophic problems everywhere should she be able to complete this.