Please note this is a region B Blu-ray and will require a region B or region free Blu-ray player in order to play Directed by Michael Bay and produced by Steven Spielberg this sci-fi action adventure is the fourth instalment in the film series based on the 1980s cartoons Four years after the invasion of Chicago mechanic and single parent Cade Yeager (Mark Wahlberg) discovers what he believes to be a dilapidated truck and takes it home to repair What he really has resting in his garage is a deactivated Optimus Prime (voiced by Peter Cullen) When government officials learn of the discovery they try to push humanitarian boundaries in the name of scientific development