The Doctor, Jamie and Zoe arrive on an unnamed planet. At first believing themselves in the midst of World War I, they realise it to be one of many War Zones overseen by the War Lords, who have kidnapped large numbers of human soldiers to form the greatest army the universe has ever seen. At the helm of this plot is the War Chief, another renegade Time Lord like the Doctor. The creeping realisation sets in that the Doctor cannot solve this problem alone, and that his days of wandering may be at an end...
Richard II, who ascended the throne as a child, is a regal and stately monarch. He believes he is the rightful ruler of England, ordained by God, yet he is a weak and ineffective king - wasteful in his spending habits, unwise in his choise of chansellors, and detached from his country and its people. When he seizes the land of his cousin Henry Bolingbroke, both the commoners and the barons decide that their king has gone too far...