When Lord Dahn-Guh "accidentally" unleashes powerful demons unto the land, he orders the fool Ondal to recapture them! Unable to fulfil the task on his own, Ondal is accompanied by Hae-Moh-Soo–a legendary, foul-mouthed warrior who helped to trap the demons in the first place–and…David Copperfield?! Along the way, they come across quite the interesting array of characters: a gang of armed nuns, the mysterious Samson with singing powers, the twins Pai and Pei, and so many more!