剧情介绍
Whenaswarmof"leaf-gobblers"devoursallthegreenfoodintheGreatValley,theherdsmoveontofindanothervalleyofgreensandintheprocess,LittlefootandhisfriendsSpike,Cera,PetrieandDuckywinduponanislandinthemiddleoftheBigWater.They'rereunitedwithChomper...Alongwithhisnasty,hungryparents.