<P> The film premiered at Odeon Leicester Square in London on June 18, 2017, and was theatrically released in the United States on June 21, 2017, by Paramount Pictures in 2D, 3D, and IMAX 3D . Like its predecessors, the film received negative reviews from critics and, with an approval rating of 16% on Rotten Tomatoes, it is the worst - reviewed film of the Transformers series . It underperformed at the domestic and international box office, grossing $605 million worldwide against a budget of $217 million, and making only $132 million in the United States making it the lowest of the franchise . </P> <P> A spin - off / prequel, entitled Bumblebee: The Movie, is scheduled for release on December 21, 2018 and an untitled sixth film, a direct sequel to The Last Knight, is set to release on June 28, 2019 . Bay will produce both films . </P> <P> In 484 AD, King Arthur and his knights struggle in a devastating battle against the Saxons . Meanwhile, Merlin begs for help from the Knights of Iacon, a group of twelve Transformers who have hidden on Earth . They give Merlin an alien staff and combine themselves into a huge robotic dragon named Dragonstorm to help Arthur triumph over the Saxons, but not before warning Merlin that a great evil will one day come for the staff . </P> <P> In the present, five years after the Hong Kong battle, all Transformers are declared outlaws by all governments on Earth, and the Transformer Reaction Force (TRF) is formed from the fallen Cemetery Wind faction to kill them, despite more Transformers continuously arriving on Earth . All the while, enormous metallic horns begin to rise from different parts of the world . In a part of war - torn Chicago, a group of children find a ship with a knight inside before being caught by a TRF drone . Izabella, a survivor of the Battle of Chicago, saves the children along with her Transformers companions Sqweeks and Canopy . The drone mistakes Canopy for a Decepticon and kills him before Bumblebee and Cade Yeager, who is also being hunted by the TRF, arrive and rescue the others . Cade finds the knight in the ship, who attaches a metallic talisman to his arm . The Decepticon Barricade observes this act and reports the discovery to Megatron . After a brief standoff with the TRF, Cade and Bumblebee return to their junkyard in South Dakota where the remaining Autobots are taking refuge from the TRF; Izabella and Sqweeks stow away with them . </P>

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