Based on the timeless legend of King Arthur, David Lowery (A GHOST STORY) tells the adventurous story of the daring Sir Gawain (Dev Patel) , a Knight of the Round Table, in THE GREEN KNIGHT. To prove himself to his family, his people, and ultimately to himself, King Arthur's nephew embarks on the journey of a lifetime with the goal of facing the ultimate challenge: the legendary Green Knight, a gigantic, emerald-skinned stranger and tester of men.