A new girl, Felisa Wilmer, joins a religious school for girls in the north of Buenos Aires. Recently arrived from London, Felisa becomes the centre of attention thanks to her rebellious attitude and bad behaviour, and her artistic tendencies, her perfect English and her impenetrable and independent character means that she is surrounded by a 'poetic' aura. At least that's how López, the narrator and protagonist, sees her, and she wastes no time in making friends with her. The two girls live among the more or less salacious stories that they tell about the school's history, and certain more real 'dangers' that are to be found nearby. But little by little López will discover more about Felisa, who lives with her grandmother since her mother was killed in an accident, and the reasons for her eccentric and suicidal behaviour, as if 'possessed' by those around her.