Gawain embarca em uma missão ousada para enfrentar o Cavaleiro Verde, um ser misterioso que apareceu em Camelot com um desafio enigmático. Arriscando sua cabeça, ele encontra fantasmas, gigantes, ladrões e enganadores em uma aventura épica.

A young Viking prince strives to become a knight in King Arthur's Court and restore his exiled father to his rightful throne.

Gawain was a squire in King Arthur's court when the Green Knight burst in and offered to play a game with a brave knight. Gawain journeys across the land, learning about life, saving damsels, and solving the Green Knight's riddle.

Tom Trimble, um astronauta, e seu androide, Hermes, voltam por acidente aos tempos do Rei Arthur. Ele tenta ganhar a confiança do Rei afirmando que sabe que Mordred e Merlin irão traí-lo.

The film chronicles Perceval's knighthood, maturation and eventual peerage amongst the Knights of the Round Table, and also contains brief episodes from the story of Gawain and the crucifixion of Christ.

One Christmas, a knight garbed all in green appears in King Arthur's Court and challenges any knight to hew off his head on the proviso that he be allowed to return the axe stroke afterwards. All of King Arthur's other knights being frightened, Sir Gawain takes up the challenge and hacks off the green knight's head. The green knight then gives Gawain a year to find his home and live a little before the cut is returned.