The fourth installment of the blockbuster franchise based on the Hasbro toy line. Autobots must escape sight from a bounty hunter who has taken control of the human serendipity: Unexpectedly Optimus Prime and his remaining gang turn to a mechanic his daughter and her back street racing boyfriend for help. Director: Michael Bay Starring: Mark Wahlberg Stanley Tucci Kelsey Grammer Nicola Peltz Jack Reynor Titus Welliver.