A mysterious Green Knight rides into a court celebration and challenges the young knights present to strike him with his own axe... on the condition that he, the Green Knight, may return exactly the same blow in a year and a day. Gawain accepts and cuts off his head. But the Green Knight stands up, retrieves his head, and rides away, reminding Gawain of his promise to meet again... Adapted from the 14th century manuscript of the same name.