The Warner Bros and Village Roadshow project will be a reunion for Law, 41, and Ritchie, who worked together on 'Sherlock Holmes' and sequel 'Sherlock Holmes: A Game of Shadows', reported Variety.
'Sons of Anarchy' star Charlie Hunnam is starring in the film as King Arthur. 'The Sea Wall' actress Astrid Berges-Frisbey will play Guinevere, Queen consort of King Arthur in the Arthurian Legend.
Ritchie is directing from a script by Joby Harold, and the film is the first of a series, which is set to have six instalments. It is unknown whether Law would be appearing in one movie or play a villain throughout the course of the franchise.
Lionel Wigram, Akiva Goldsman, Tory Tunnell, Harold and Ritchie are producing. Niija Kuykendall and Cate Adams are overseeing for the studio.