Where do lost souls go? To death's library of course. The labyrinth built by death is maze wherein lost souls get to interact with one another. It is a form of purgatory that allows souls to make contact with fellow souls like them who're stuck in a limbo and cannot quite pass into the afterlife just yet. Along came in a young boy who stumbled about the enchanted library. Indebted to death after being saved from an accident, the young boy must now pay back his debt by working in the library and assisting the 'Departing' souls.