Una and Sans Foy travel in the woods until forest people, hearing Una’s cries, come to her aid and chase Sans Foy away. They worship Una but she tries to teach them of the true God. In their ignorance they worship her donkey. Another knight arrives (a knight born in the forest), Satyrane (his name means born of a satyr, a half-man, half goat creature from mythology), and leads Una out of the forest when the wood creatures are busy elsewhere. A pilgrim (Archimago in disguise) meets them and tells them he saw a pagan and Christian knight fight and that the Christian was slain. Una believes Red Cross is dead. The pilgrim directs them to a place where he claims the pagan knight is tending his wounds. Satyrane goes alone, with Una and Archimago following secretly (separately) to watch. Satyrane battles Sans Loy but Una is so fearful of the Saracen that she flees. Archimago follows her.
Duessa finds that Red Cross has fled Castle Pride and goes after him, finding him wounded and without armor by a fountain. The fountain causes him to become even weaker. The giant Orgoglio arrives and Red Cross tries to fight him. Orgoglio is about to kill him when Duessa suggests he instead make him prisoner and take Duessa as his queen. (Duessa also represents the Scarlet whore of the book of Revelation, deceiving the nations and riding on a seven-headed beast given to her by Orgoglio). The Dwarf takes Red Cross’ armor and horse and leaves.
The dwarf finds Una. She fears the worst seeing the armor and horse and faints. The dwarf tells her of Red Cross’ captivity and they set out to search for him. They meet Arthur (the legendary English king, who symbolizes the spirit of England and mature virtue) and his squire. Arthur hears their story and agrees to help. Arthur’s squire blows a trumpet and the Giant’s doors burst open. The giant appears. Arthur fights the giant and kills him. Duessa flees but the squire brings her back. They take off her beautiful clothes and leave her in rags, deformed, bald and ugly. She runs away. Red Cross is in the dungeon of despair and remains sick and defeated even after they rescue him from Ignaro (Ignorance), the dungeon keeper who does not know where any of the prisoners are. Arthur leaves them and Una and Red Cross go on their way.