The students settle down for a night on the barricade and, in the quiet of the night, Valjean prays to God to save Marius from the onslaught which is to come. The next day, with ammunition running low, Gavroche runs out to collect more and is shot. The rebels are all killed, including their leader, Enjolras.

Valjean escapes into the sewers with the unconscious Marius. After meeting Thernardier, who is robbing the corpses of the rebels, he emerges into the light only to meet Javert once more. He pleads for time to deliver the young man to a hospital. Javert decides to let him go and, his unbending principles of justice having been shattered by Valjean's own mercy, he kills himself by throwing himself into the swollen River Seine. A number of Parisian women come to terms with the failed insurrection and its victims. Unaware of the identity of his rescuer, Marius recovers in Cosette's care.