Monty Python and the Holy Grail Movie Review: King Arthur (Graham Chapman) and his trusty knights travel the length and breadth of the country in search of the mythical Holy Grail. On their way, they have to deal with the sarcastic taunts of the French Knight, the Knights who say ‘Ni.’ Plus they meet Tim the Enchanter (John Cleese) and the Terror of the Cave of Caerbannog.