Trying to locate her missing friend, Marisa the adventurer enters the great Lustlock Labyrinth; a magical dungeon of untold power.
Those who challenge the dungeon risk everything; their minds, their bodies... even their names are at stake.
To the one that conquers the dungeon? They win their heart's desire...
Riches? Women? All is possible...
Those that lose will be trapped forever.　
Of course, Marisa is above such temptations... She only has her friend's safety in her mind.
Can she reach the deepest floor and conquer the dungeon? Or will she lose everything and become a sex slave?