Jail is a living prison for humans, buried 666 meters underground. It suddenly appeared decades ago, spawning monsters called Marchen and patrolled by madness-inducing Nightmares.
A group of prisoners, Jack and the Blood Maidens, reincarnations of fairy tale creatures, dared to escape. They rose from the bottom of the tower to the surface, full of hope…
But outside lay thousands of corpses, submerged in a sea of blood. There stood the smiling creatures known as Massacre Pink. At that moment, hope faded. The group split up, Jack and the Blood Maidens going their separate ways.
Separated, they are drawn toward the Prison that devours them, floating in the sky…