'You are not worthy of the Grail,' said the knight. 'Do you even believe in its holy power, Locksley? Do you even believe in Jesus Christ, in God Almighty? No wonder you fight so hard for the cause of these heretics.' September 1209. After a botched robbery in Sherwood, Robert, Earl of Locksley, better known as the outlaw Robin Hood, and his lieutenant Sir Alan Dale, have fled King John's wrath to seek shelter in the Languedoc. Swept up in the brutal Albigensian Crusade, Robin and his brave men must battle the Army of God, a fanatical invading force blessed by Pope Innocent and led by wily Simon de Montfort, which is determined to root out all heresy in this rich, tolerant southern land with fire and the sword. However, Robin is also on a vital mission. He cannot go home to his family in England until he has in his possession a great treasure, perhaps the most precious object in the world – the Cup of Christ, the holy vessel that once held the Saviour's blood as he suffered on the cross at Calvary.