The film explores the notion of extreme emotional devotion to God and follows a young nun, Celine, as she is sent away from her convent on journey of self-discovery when her own devotion has her superiors worried. Here is the official plot synopsis:
Sister Hadewijch, a novice, is a radical Christian making herself suffer by fasting and standing in the rain. The Mother Superior (Brigitte Mayeux-Clergot) expels her. She meets the young man Yassine (Yassine Salim), but tells him that she cannot fall in love with him because she is in love with Jesus. He introduces her to his brother Nassir (Karl Sarafidis), a fanatic Muslim who convinces her to participate in a terrorist attack in the Paris metro.