Littlefoot Sees A Flying Rock Falling From The Sky And Landed In The Smoking Mountain. When He Tells The Grown Ups About What He Saw, They Didn't Believe Him. Suddenly, The Rainbow Faces Tells The Littlefoot That It's Called The Stone Of Cold Fire. Petrie's Uncle Pterano Also Heard About This Stone Of Cold Fire. He And His Henchmen Plots To Steal The Stone And Use Its Power To Rule The World. Littlefoot And His Friends Sets Off To Another Adventure To Find The Stone Of Cold Fire Along With Their Friend Being Captured By Pterano And His Henchmen. The Young Dinos Must Figure Out The Truth Before Pterano Gets The Power.