Britannia, Fifth Century AD. Arthur, son of king Uther Pendragon Brutal, pulled the magic sword Excalibur from the sacred rock. Recognized as elected Gods, it is invested with a noble mission towards his people. Became King of Britain, still under the domination of the Roman Empire, he moved the seat of the kingdom at Castle Kaamelott, with the aim of uniting Breton clans within the same government. This government, made up of the Lords, Kings and Knights, is réuniara around the Round Table, where they will swear to find the Holy Grail that received the blood of Christ on the Cross. Arthur married Guinevere the young daughter of Leodagan king of Carmélide for strategic and political reasons. And soon an heir to the Kingdom. Invasion attempts are increasing to the Breton borders. The order is preserved by the war and diplomatic alliances. One morning the King Arthur gathered his knights in the largest room Kaamelott.