Transformers One goes back to its roots, the untold origin story of Optimus Prime and Megatron. Known to be sword enemies were once friends bonded like brothers as they changed the fate of Cybertron. The film is also the first-ever CG-animated Transformers movie in the franchise. With a big voice cast including Chris Hemsworth, Brian Tyree Henry, Scarlett Johansson, Keegan-Michael Key, Steve Buscemi and more, how well does this origin story deliver?