It looks like Michael Bay has taken critics seriously with Transformers The Last Knight after they savagely panned his last movie Age Of Extinction. The recently released trailer promises a serious storytelling accentuated with power-packed action sequences featuring the fan favourite Autobot leader Optimus Prime, Bumblebee and Mark Wahlberg's Cade Yeager.

However, to everyone's shock, Prime was seen attacking his friend Bumblebee and Cade. The Autobot leader's fierce appearance and the scene of an entity appearing to devour a planet have reignited theories that the Last Knight will dig deep into the Transformer mythology and introduce Unicron.

Transformers The Last Knight
A mysterious entity appears to devour another planet in the new Transformers The Last Knight trailer Paramount Pictures

For fans, who are new to the Transformers world, Unicron is a living planet that eats planets, moons, and stars in order to gain energy. The evil and massive transformer believes in destroying the universe, which according to him, is chaotic. The planet eater was rumoured to appear in the fifth installment of Hasbro's live action thriller franchise. It remains to be seen how his enormous God-like power will be destroyed by Bumblebee and his human allies.

However, it will be too early to predict the appearance of the Lord of Chaos as the core of the storyline but since he is able to travel through space and time, we might just see him adding depth to the current plot.

Some speculate that Optimus, who went to outer space in search of the Creators will be killed by Unicron, hence the scene where he is seen drifting lifelessly in space. Cosmic Book news claims that a race called the Quintessons will resurrect Prime as part of a plot to steal the Matrix of Leadership.

Multiple fan theories suggest the fifth sequel has derived its plot inspiration from the animated movie Transformers: The Movie where Optimus was killed by the Decepticon leader Megatron. During the epic battle between the Autobots and the Decepticons, Hot Rod acquires the Autobot Matrix of Leadership.

However, the Quintessons conspire to get it back and resurrect Optimus in order to get the Matrix of Leadership from Hot Rod. Transformers: The Last Knight releases in theatres on 23 June 2017.