There is a place that appears like a mirage. Disappearing and reappearing over and over again.
In this place, people have been disappearing.
Seria, a knight of the kingdom, has come to investigate the rumors of the villagers suddenly disappearing.
However, that place was a labyrinth where starved demons run rampant ...
Within the dungeon, there are many monsters and traps.
A woman wearing a white tunic, a adventure, a suspicious man wearing a tunic ... Are they friends or enemies?
Will Seria be able to solve and escape ...?