Giuliano's life is turned upside down when his mother disappears without a trace and he suffers abuse at the hands of his instructor. He finds refuge in the monastery of Assisi. But a mystical experience in the Basilica of San Francesco and the intrigues of a fellow monk lead to his forced admission to a psychiatric ward, where he continues to bear witness to his miracle and attempts to publish its deeper meaning.
An unexpected turn of events leads him to the Vatican. As a representative of the Congregation for the Causes of Saints, he is confronted with the depths of human destiny, until the coronavirus pandemic forces him back to the monastery. Undeterred and against all odds, he remains determined to reveal the secrets of the saints. Then events come to a head...