A strange disease is linked to a mysterious hole leading to an underground world: the Asylum. "Sleepers" go into this world to fight strange monsters and recover unknown resources. Now, a young boy who dreams of being a hero has arrived at the Asylum.
Their main job is to research
and investigate, as well as recover,
مهمتهم الأساسية هي البحث 
والتحقيق، بالإضافة إلى استعادة
Ihre Hauptaufgabe ist die Erforschung
und Förderung neuartiger Ressourcen
Su trabajo principal es investigar
e indagar, así como recuperar
Ce sont des équipes qui étudient
et extraient les ressources
A função deles
é pesquisar, investigar e recuperar