Upon reaching Barcelona, the group encounters the mysterious Knight of the Moon. The battle is fierce, but the "knight" is actually in disguise, hoping to win fame by defeating Quixote.

: Rucio joins forces with his owner, the wealthy squire Sancho Panza , and Quixote’s actual horse, Rocinante . Unlike Rucio, Rocinante is a cynical creature who would much rather stay in his stable than go on a quest.

: When Quixote is nearly defeated, he selflessly renounces Dulcinea to save her honor. This act of true chivalry proves his worth. The "Knight" then reveals her own secret: she is the real Dulcinea , who set up the tournament to see if her true love actually existed.

Rucio’s grand adventure begins when a duel is announced in Barcelona. The stakes are high: if Don Quixote can defeat the , the true identity of his beloved Dulcinea will finally be revealed.