A first-class demon goes out to party. For some unknown reason, Odile wakes up on Earth as a human's guardian demon, with an unknown body, unable to go out on her own and forced to cohabit with a cat and an angel who cannot stand her.

A first-class demon goes out to party one night. For some unknown reason, she wakes up on Earth. But what looks like a simple accident will be revealed to be part of a complex scheme to maintain her far from politics and call elections in order to choose Hell's New Ruler. Enclosed in a human shape, Odile will see astonished all that is around her: sexism, homophobia, racism, menstrual taboos, social networks, revolutions and great wars. People seem weak yet intriguing to her, and they will also manage to captivate her with their dreaming spirit, their creations and, above all, art. Besides, the intervention of an unexpected nemesis will make Odile and Ella -Dave's guardian angel- leave their 'natural antagonism' aside and reconsider their way of viewing the world, and accept, much to their regret, the complicity and attraction that is building up between them.