In that appropriate region the apostle explains that Orlando's insanity is due to the fact he loves an infidel! He further points out where the hero's stray wits are stored, and directs Astolfo how to catch them in a vial and restore them to their rightful owner.

Then, before conveying Astolfo back to earth, St.John vouchsafes him a glimpse of the Fates, wearing the web of Destiny, which they cast into the stream of Oblivion, whence only a few shreds are rescued by poets! On returning from this eventful trip to the moon, Astolfo joins the Saracens.

When they finally capture the mad Orlando, he produces his vial, and, making his friend inhale its contents, restores him to his senses.

His mad passion for Angelica being now a thing of the past, Orlando concentrates all his efforts to conquer the Saracens and triumphs in many a fight.
Meantime Rogero, on his way to join Bradamant, has been shipwrecked on an island, where a hermit converts him to the Christian faith.

While he is here, Orlando and Rinaldo arrive with their sorely wounded friend, Oliver, whom they entrust to the hermit's care.