Father Vincent is trying to build a church in the California neighborhood. Greeted by stones, he must face a sinister band of deviants excited by a shady cabaret performer. The abbot resists, gradually builds his church and regenerates all the wretches with whom he lives and especially the hardest, Bibi.

Le long et difficile combat de l'abbé Vincent, dans son devoir d'évangélisation d'un quartier défavorisé de la périphérie parisienne...