As punishment for wreaking havoc in Heaven, Sonogong is locked inside a huge iron mass for 500 years. An old priest, Samjang Bupsa, who has set out to rid the world of evil and spread peace throughout the land, eventually rescues him, and Sonogong becomes Samjang’s disciple. Along the way, they encounter Saojung, who envies Sonogong’s remarkable Superboard, and Jopalgye, a brute swine‑oil seller. After a series of twists and turns, the trio joins Samjang’s mission. Wherever they travel, they face overwhelming enemies and troublesome situations, yet they never grow frustrated and always find ingenious ways to defeat the monsters.