This episode traces the tragic reign of Henry VI, a gentle and pious king who inherited the crowns of both England and France as an infant but proved unable to hold either. Born during the height of England's power under Henry V, Henry VI grew into a ruler unsuited for the violence and political maneuvering of medieval monarchy. His incapacity coincided with the French resurgence, led by Joan of Arc, which reversed nearly all of England's territorial gains.

At home, Henry's weakness allowed rival factions to dominate the court, especially the Beauforts and the House of York. His sudden mental collapse in 1453 plunged the kingdom into chaos, empowering his ambitious queen, Margaret of Anjou, and fueling the claims of Richard, Duke of York. This political fracture erupted into the Wars of the Roses, beginning with the First Battle of St Albans in 1455.

Henry was twice overthrown — first by Edward IV in 1461, then briefly restored in 1470 before being imprisoned again. In 1471, after the Yorkist victory at Tewkesbury and the death of his son, Henry VI was murdered in the Tower of London. His reign marked the collapse of English power in France, the breakdown of royal authority at home, and the beginning of England's most devastating civil war.