On a sunny day, Big Gray Wolf suddenly broke into the Sheep Village. Although he was repelled by the lambs, he robbed the village chief's magic carpet. Pleasant Goat was praised by his companions for his bravery, but Lazy Goat was a little indignant about it. In order to prove his strength, he mistook Slow Goat's time-space camera for a pistol, stole it and broke into the Wolf Castle. Pleasant Goat, who learned the news, rushed to rescue him, but was caught in the chaos of time-space turbulence and returned to ancient times. Big Gray Wolf and Lazy Goat even exchanged bodies by the magic carpet. Big Gray Wolf was accidentally chosen as a son-in-law by the daughter of the primitive sheep, and Lazy Goat became the leader of several stupid wolves. The scary thing is that there is a dragon that can turn any creature into stone. In order to protect their friends in the primitive era, Pleasant Goat and his friends joined hands to challenge the dragon, and Lazy Goat became a hero who could change history...