The movie adaptation of "Assassin's Creed" is finally moving along. Ubisoft has announced recently that production for the highly-anticipated film version of the historical fiction action-adventure open world stealth video game series has begun. 

"We have the pleasure to announce today that the green light has been given by New Regency and the production has already started," Ubisoft CEO Yves Guillemot said, as quoted by Wired UK. "This is a very important milestone for the project and for our team on Assassin's Creed."

The adapation of the video game for the big screen has been in discussion since 2011 as Ubisoft itself formed Ubisoft Motion Pictures to uphold its creative control of the franchise, along with all other properties it will rework as films, namely "Far Cry," "Rabbids," "Watch Dogs," "Splinter Cell" and "Ghost Recon."

Michael Fassbender is long rumored to lead the ensemble in the "Assassin's Creed" movie and no other celebrities in the cast were named until now. 

New reports have confirmed the participation of award-winning actress Marion Cotillard. The critically-acclaimed performer is best known for her role in the 2007 film "La Vie en Rose" as Edith Piaf. Her rendition in the movie won her praises and an Oscar, too. Cotillard won't be adjusting too much with the "Assassin's Creed" movie since she has worked with Fassbender and the movie's director Justin Kurzel in "Macbeth" set to come out this year. 

Adam Cooper and Bill Collage are in charge of the screenplay but the plotline for the film remains to be seen. But being a loose adaptation of the first game of the "Assassin's Creed" franchise, many fans and gamers already have an idea on what would transpire in the movie.

"Assassin's Creed" follows a man named Desmond Miles, who tries to forget about his assassin roots and continues his normal life as a bartender. But it is because of it that he will be abducted, his captors forcing him to wear the Animus, which will make him relive the memories of his ancestors and eventually be exploited by his abductors to locate powerful relics. 

The film is expected to point up to the people in the present as they trace back their parentage through reliving the memories of the ones before them. This means that Fassbender is likely to portray dual characters, his assassin self from the times of yore and his own descendant. Cotillard's role, on the other hand, is still undisclosed.

"Assassin's Creed" is set to come out on Dec. 21, 2016.