Plo ,atthattimetheEarthverywasstillyoung,justcrossedthebittercoldiceage,theleadwastheyouthwhichthepositionnamecalledKenai,helivedtribebybearattack,eldestbrotheralsothereforegotkilled,youthKenaididnotattendtothevillagerstoteachwarns,wholeheartedlyonlywantedtotakerevenge,thethoroughforesthadtoberuthlesstothebearrace,thisyouth'sactionhasencroacheduponthewoodsLinZhongdiGod,thereforeonalsoturnedhimabear,hadtolethimtastethetastewhichhuntandkillbythehumanity。
Turnsbear'sKenaitoencounterthesimilarpledgerevengetwoelderbrotherDenamitopursuekills,hetreadsthejourneyinunderayoungXiongKodahelpwhichbecomesafugitive,atheirgroupmustrushplaceoftheauroratowardthenorth,alongthewaycrossedhasbeenlayeronlayerdifficult,inordertosurviveKenaitohavetousetheformerfoe'sviewpointtolookattheworld,healsohadanunprecedentednewexperiencetothelifetruemeaning。
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