England 932 A.D. King Arthur (Graham Chapman) accompanied by his trusty servant Patsy (Terry Gilliam) is seeking Knights to join his Round Table at Camelot.
Arthur confronts two guards obsessed with swallows, argues with a group of constitutional peasants, challenges the Black Knight who literally comes apart at the seams and witnesses the outing of a witch before he finally enrols his first Knight, Bedevere the Wise (Terry Jones). Other Knights follow: Sir Lancelot the Brave (John Cleese), Sir Galahad the Pure (Michael Palin) and the not-quite-so-brave Sir Robin (Eric Idle).
Avoiding the singing dancers of Camelot, Arthur and his Knights are inspired by God to quest together for the Holy Grail. But taunted and humiliated by the French, they decide go their separate ways.
Sir Robin is confronted by a Three Headed Knight, Sir Lancelot hacks his way through the guests at a wedding to save a damsel in distress, Arthur and Bedevere, warned by a Soothsayer, meet the shrubbery loving Knights of Ni while Sir Galahad almost falls to the temptation of the maidens of Castle Anthrax.
The Knights join up again and after an arduous journey encounter Tim the Enchanter who leads them to the cave, guarded by a foul creature, wherein an ancient inscription reveals the whereabouts of the Grail.
The Bridge of Death claims more victims and when only Arthur and Bedevere reach the final resting place of the Holy Grail, they are thwarted by old adversaries.
