Inatimenowlostinthemistsofmemory,thegreatKingArthurrulesinthelegendarycitadelthatisCamelotHisKnightsoftheRoundTableperformactsofderringdoandspendtheirsparetimejousting,muchtothedelightofthelocalcitizensandespeciallytoPrincessIlene,aguestatCamelotWatchingherfromafarisayoung,inexperiencedsquirecalledValiant,andwhentheyoungWelshprincessissenthometomarryPrinceArn,ValiantcontrivestoaccompanyhermasqueradingasSirGawainMeanwhile,theevilsorceressMorganleFey,sistertoKingArthur,hasconvincedthetyrannicalSligon,ruleroftheVikingkingdomofThule,thatheshouldstealArthur'ssword,thepowerfulandmagicalExcalibur,knowingthatitslosscouldbringaboutArthur'sdownfallSointothefraycomesSligon'sunstableandpsychoticbrotherThagnar,whomanagestostealtheswordPandemoniumreignsButValiantishavingproblemsofhisownkidnappersattempttostealawaythePrincess,andaftervariousskirmishes,includingonewithamysteriouscharacterwholivesinacaveandpurloinstreasure,womenandotherthingsofvalue,ValiantmanagestoreturnthePrincesstoherhomelandalthoughhealsomanagestohaveaduelwiththePrincess'jealousfiancé,PrinceArnAllthingsconvergeasValiantisfinallyinformedofhisheritagebythestrangerfromthecaveBoltarofThuleHeinformstheladthatheisPrinceValiant,rightfulheirtothekingdomofThule,andwithhishelp,Valiantreturnstothelandofhisbirthtorightfullyclaimwhatishis