Geneva 2018. On a train, Isabelle spots a young woman entirely clad in Islamic attire. Her heart skips a beat: it's Anaïs, her granddaughter. Without saying a word to Anaïs, Isabelle calls Léa, Anaïs' mother, who lives in Montreal. Léa immediately flies to Switzerland. She wants to understand why her daughter has converted to Islam. But Isabelle believes that if Anaïs secretly ...