Terry Jones examination of Philosophers, their mythic pursuit of a "stone", alchemy and medicine in the Medieval world. Dispelling myths on the fanciful ideas of belief in a flat earth. The ideas of the Franciscan Friar Roger Bacon. Holistic medicine and transmutation. The actual basis of scientific thought and how the Church fomented these pursuits for glory and profit. To the four humours of Medieval health Terry Jones adds his own while he travels to unearth their place in Medieval life.