'Transformers' is an American sci-fi action film series, directed by Michael Bay and produced by Paramount Pictures and DreamWorks. The first Transformers was released back in 2007 and was a huge success. It was then followed by 'Revenge of the Fallen' in 2009; the first sequel was a major success as well. The second sequel, 'Dark of the Moon' hit the big screens in 2011 and the latest Transformers sequel was released in 2014; which was 'The Age of Extinction'.

Meanwhile, this year, Michael Bay is directed yet again another sequel of the film series. Transformers: The Last Knight is going to be released in the year 2017 and there had been tons of rumors and speculations ever since the confirmation of the film.

According to JoBlo, this sequel will pick up where the last movie left off and the film's plot will mostly be revolving around Optimus Prime whose mission is to bring his home planet, Cybertron, back to life after finding out that it had become a desolate because of the civil war that happened between the Autobots and Decepticons.

It was rumored that the leader of the Autobots is partially the reason why the civil war happened in the first place. But in order to bring his home planet back to life, Optimus Prime is going to need an artifact, a mysterious one that is; that can be found in nowhere else but Earth.

There are also rumors that the artifact that Optimus Prime is after is connected to a medieval sorcerer named Merlin, King Arthur's mentor. Speculations suggest that the mystery artifact could possibly be the mythical sword the Excalibur. Fans were able to come up with this theory because of the sword that's featured in the film's key art.

Bumblebee will have a pretty big role in the movie too.

Transformers: The Last Knight will start hitting the cinemas in US on June 23, 2017.