After Boromir's death, the group is charged with helping what is left of the Fellowship to save the world of the plotline, they help Gandalf to slay the Balrog at the Bridge of Khazad-dûm.
The group is charged with helping what is left of the Fellowship to save the world of the plotline, they help Gandalf to slay the Balrog at the Bridge of Khazad-dûm. This is after Boromir's death.