Disney has confirmed a new spin-off film "Star Wars: Rogue One" and this leaves fans with a question as to what will the film be about. A new theory states that the film will build up Darth Vader before his big scene.

It is confirmed that the Sith Lord will appear in the film, as per The Week the film may cover young Ben Solo's conversion from trainee Jedi to proto - Sith Kylo Ren. It is also believed that the film could be about Boba Fett. The casting will not be a tedious task since the character has not been seen without his helmet.

According to International Business Times the plot is about a group of Rebel soldiers attempting to steal the plans for the Death Star. It is sure to be interesting and thrilling as there will be diverse shades of opinions about the Sith Lord.

It also states that there will be a third Rebel who will talk about the characters transformation from a Jedi to the Dark Side. It is still unknown how much screen time the Sith Lord will play in the film. But what is certain is that his scenes will be significant.

"The Force Awakens" made nearly $ 2.1 billion worldwide, making it the third highest grossing film in History. The level of interest is said to be equal as it was for "The Force Awakens." The main villain of the film is director Orson Krennic. There are other theories stating that the film will reveal a Darth Vader castle, a huge black fortress which stands near a beach on Planet Vjun.

The producer and director have been very blurred in revealing Darth Vader's role in "Star Wars: Rogue One." Nevertheless, the twisted plots and new theories keep fans on the wait to experience the reality.