A peça foi um sucesso, e o grupo decidiu adaptar a história para o cinema. O roteiro foi escrito pelos seis membros do grupo, e a produção do filme foi realizada pela Python (Monty) Pictures.
The film parodies the legend of King Arthur’s quest to find the Holy Grail. King Arthur (Graham Chapman) and his servant Patsy (Terry Gilliam) travel through a dark ages Britain recruiting knights for the Round Table. After receiving a vision of God, Arthur and his knights—Sir Bedevere, Sir Lancelot, Sir Galahad, Sir Robin, and the oddly-named Sir Not-Appearing-in-This-Film—embark on a quest for the Grail. Their journey is thwarted by absurd obstacles: a murderous rabbit, a three-headed giant, French soldiers who taunt them from a castle, an enchanter named Tim, a Trojan Rabbit, a monster of the Lake of Caerbannog, and a persistent historian who is accidentally killed by a passing knight. The film famously ends without a climax—modern police arrest the knights for the historian’s death during a final battle, and the screen cuts to black. Monty Python em Busca do Calice Sagrado.-1975- ...