They leave the forest and meet up with the old holy man. Una urges the Red Cross knight to rest and the old man agrees. They are assigned sleeping places, and the old man shows his true form, Archimago, and summons sprites. Red Cross has troubling dreams. A sprite impersonates Una and begs Red Cross to be her lover. He sends her away. Next he sees what appears to be Una with another man but is another of Archimago’s tricks. Red Cross leaves in sorrow and rage, taking the dwarf, horse and armor with him. Una awakes, finds him gone, and leaves with her donkey and lamb to search for him. Archimago dresses himself as the Red Cross Knight and follows at a distance.Completely deceived by Archimago, the knight wonders if perhaps there is no quest, no terrible dragon. He wonders how he can prove himself to the Faerie Queene.
Red Cross rides across a field and meets Sans Foy and Duessa. Sans Foy says that he despises the cross the knight wears, and that he will fight him. The woman, who is a wicked sorceress, tries to warn Sans Foy, that the knight’s armor and shield have been well-tested in battle. Sans Foy sees that the knight is very young and challenges him anyway.Red Cross slays Sans Foy and Duessa flees, but Red Cross catches her and reassures her that he means her no harm. She claims she is Fidessa, that she is an emperor’s daughter and Sans Foy kept her prisoner. Red Cross hears her story and promises to help her. They travel on and rest beneath two trees at a stream. One of the trees (Fradubio) warns him about Duessa, who cursed him and his love and turned them into trees. Red Cross sees that Duessa has fainted and does not realize the tree is warning him about her. He rouses her and they go on.