In a small French town, a young girl named Bernadette Soubirous struggles against the poverty and indifference that surround her. In 1858, during one of her walks to the mountain of Massabielle, Bernadette has a supernatural experience when she encounters a beautiful lady dressed in white who reveals herself to be the Virgin Mary. From that moment on, Bernadette's life takes a radical turn as she begins to receive divine messages that she must share with the community.
As news of her visions spreads, the faith of some grows, but it also stirs skepticism and opposition among local and ecclesiastical authorities. While the young girl becomes the center of attention and the focus of a growing devotion, she will face societal pressure to prove the authenticity of her supernatural experience.
The relationship between faith and doubt becomes a central theme, challenging the convictions of those around her. Bernadette, with her kindness and innocence, becomes a symbol of hope and the divine for many. However, she must also deal with the consequences of her revelation, facing both admiration and criticism. The film portrays her journey from the simplicity of her everyday life to a destiny that will change her life and the history of religion in the region, showing how faith can transform human existence in times of uncertainty.