Kannai town in Yokohama became a ground for a major incident and turned into a limited zone. The lawless city of "Agarta" rose on its place. Two years after the incident a young man Yuuki sets for Agartha in search of his lover missed after the incident.

Kannai town in Yokohama became a ground for a major incident and turned into a limited zone. The lawless city of "Agarta" rose on its place. Two years after the incident a young man Yuuki sets for Agartha in search of his lover missed after the incident.