Trouble is brewing in Christendon in the form of a secret rebellion among soldiers loyal to Sir Mordred's philosophy. King Arthur, aware of this threat, advises Valiant to watch himself around Aleta since she may pose a threat to Camelot. The prince, once sure of Aleta's feelings and loyalties, finds himself doubting the princess when he learns that she intends to sail back to the Misty Isles. His efforts to find proof of her true affiliation leads him right to the inner circle of Christendon's traitorous rebellion.