Montréal, 1959. In the classroom of Sister Cecilia, Leonie (aged 11) first met Father Malachy, a young Dominican father who has come to visit his school. It is love at first sight for this lonely and dreamy child who took refuge in religion to escape a mother who is emotional and too worried. But there is also love at first sight between Sister Cecilia and Father Malachy. Between human love and the love of God, which will prevail?