A serial killer is on the loose and only you can stop the Phantom! Story of Koyama Kazuki, a young detective working for the Igrasil. While working on several, seemingly unrelated cases, you find clues pointing to the person who killed your parents. Can you stop this new cycle of death before it’s too late?

The plot focuses on the character of Kazuki who lost his parents in an accident. After graduating from the police academy he was recruited by the non-governmental organization Igrasil which solves murders the police deem are impossible to explain due to lack of evidence.

Kazuki’s partners in the organization include the crazy and funny Ishikawa siblings; Kaoru Moriyama, the daughter of a millionaire and the founder of the whole organization; and Suzumi, the head of the organization who is responsible for making all the major decisions.