The opening of the poem introduces the extravagant Christmas festivities at Camelot, where King Arthur and his knights celebrate the holiday. As the revelry unfolds, the Green Knight bursts into the hall with a bold challenge, offering a game that tests the courage of Arthur's finest. Gawayne volunteers to take on the challenge, showcasing his bravery and sense of duty. The Green Knight insists on a unique pact, wherein Gawayne must deal him a blow and then seek him out in a year to receive a return strike. This sets the stage for Gawayne's quest, as he prepares to uphold his end of the bargain, leading to themes of honor and the trials of knightly virtue that will be explored throughout the poem. (This is an automatically generated summary.)