The history of medieval England is tumultuous and grand, from the Norman Conquest to the Magna Carta, with modern civilization gradually taking root on England's green pastures. Jeff, a modern-day office worker, is well-versed in the history of various countries around the world, yet has no practical use for his knowledge. Until one day, he is transported to medieval England and becomes a prince. Just as he is about to make his mark and realize his ambitions, he is stunned by someone calling out, "John." John... King John, the "Lackland"! He has actually transmigrated into one of the most infamous kings in medieval history!