Questioning the tree from whence the branch was taken, Georgos learns that a knight and his wife have been transformed into plants by Duessa, who does not wish them to escape from her thraldom.

During this explanation, Georgos fails to notice that the lady in red trembles for fear her victims may recognize her, nor does he mark her relief when she perceives her present disguise is so effective that no one suspects she worked this baleful transformation.
Riding on once more, the Red Cross Knight and his companion next draw near to a glittering castle, whose stones seem covered with gold.
Fidessa, who is familiar with this place, invites the knight to enter there with her; and Georgos, unaware of the fact that this is the stronghold of Pride, not only consents, but pays respectful homage to the mistress of the castle, Queen Lucifera, whose attendants are Idleness, Gluttony, Lechery, Envy, Avarice, and Wrath.

It is while sojourning in this castle that the Red Cross Knight one day sees Sansjoi (Joyless) snatch from his dwarf the shield won from Sansfoi.
Angered by this deed of violence, Georgos draws his sword, and he would have decided the question of ownership then and there had not Lucifera decreed he and his opponent should settle their quarrel in the lists on the morrow.

During the ensuing night, Duessa secretly informs Sansjoi that the Red Cross Knight is his brother's slayer and promises that, should he defeat his opponent, she will belong to him forever.

On the morrow, in the midst of much feudal pomp, the chivalrous duel takes place, and--although Duessa, fancying Sansjoi is about to win, loudly cheers him--the Red Cross Knight finally triumphs.