Lucy is born into a world wrecked with warfare and corruption. After a bombing raid to her city, she wakes up in the lowest level of hell. For committing the most evil sin, she must work for the devil, collecting lost souls from the mortal world. Her life sure isn't easy - her new partner Cassi hates her guts and the world is increasingly delving into chaos. Will she uncover the reason for Cassi’s behavior? What will be the fate of Earth? And what did she do to deserve all of this?!!