Goku sees the full moon and turns into a Great Ape. Jackie Chun destroys the moon with his Max Power Kamehameha. Goku returns to human form, the fight resumes, and he uses his Kamehameha. Exhausted, the two exchange kicks; Jackie Chun's is deeper, and he wins. Goku goes to look for his grandfather's Dragon Ball. He gets lost and is attacked by members of the Red Ribbon Army. Rescued by a family, he learns that the RRA kidnapped the mayor and goes to besiege the Muscle Tower. He defeats Full Metal Jacket and confronts Sergeant Major Purple, who hides using ninja techniques.