The document provides context and summary for the medieval poem Sir Gawain and the Green Knight. It introduces the poem's setting in King Arthur's court during Christmas celebrations. It describes how a mysterious green knight arrives and challenges one of the knights to a beheading game. Sir Gawain accepts the challenge and must seek out the Green Knight to receive his blow the following year. The document analyzes themes of courtesy, chivalry and keeping one's word through promises in the poem.