The eight plays, when considered together, are said to tell a unified story of a significant arc of British history from "Richard II" to "Richard III". These plays cover this history, while going beyond the English chronicle play; they include some of Shakespeare's greatest writing. They are not tragedies, but as history plays they are comparable in terms of dramatic or literary quality and meaning. When considered as a group they contain a narrative pattern: disaster, followed by chaos and a battle of contending forces, followed by the happy ending—the restitution of order. This pattern is repeated in every play, as Britain leaves the medieval world and moves towards the British Renaissance. These plays further express the "Elizabethan world order", or mankind's striving in a world of unity battling chaos, based on the Elizabethan era's philosophies, sense of history, and religion.