The Underwasteland is at the edge of the universe... and it's hell. In the house in the center of the ash desert, N inherits the title of Empress of the Underwasteland from her father.Her tasks are as important as they are monotonous: judging the deceased and taking care of the immense dungeon in which they rest. N's life is boring and lonely until a hero offers her an umbrella.“When the time comes, avenge me” is what he asks in return. N doesn't know it but that request is only the first piece of a cosmic upheaval. Between colorful encounters and difficult moments, N must complete at least a thousand years of mandate as empress.A difficult task since some sleepers are more dangerous dead than alive.