Beginning in the 13th century's turbulent feudalistic England and Wales, in the age of chivalry, the story of the King of Dungeons chronicles the stirring adventures of Owen Griffitt, the young King of Wales who never in his life lives the happiness of his crown, and spends more time in dungeons than on his throne. Having his country subdued to vassalage under English domination, Owen escapes from the dungeon he has been in for a long time and flees the country, but only to come back some day to free Wales