[2] Leah Lemonnier (Josiane Balasko), 35, leads a dreary and depressing life between her work as the secretary of a dentist who spends his time reprimanding her, her analyst (Richard Berry) who sees in her only a source of income, her neighbor, Mr. Chpil, a sexually obsessed party animal (Jean Benguigui) and her mother (Catherine Samie), nymphomaniac, selfish, greedy, narcissistic and contemptuous.

He has the face of a handsome devil, Abar (Daniel Auteuil), who offers her a deal: He will be at her service until her death in exchange of her soul.

The pact is soon canceled by the intervention of the archangel Gabriel, who is moved by the naivety of the young woman.

She pleads in his favor and the archangel accepts provided that Abar does not commit any sin for a period of several weeks.

During a fire at the hotel, Abargadon saves a child but Leah is on the verge of death, poisoned by smoke.