Transformers: The Last Knight (2017) PG-13 | 2h 29min | Action, Adventure, Sci-Fi | 21 June 2017 (USA) Humans and Transformers are at war, Optimus Prime is gone. The key to saving our future lies buried in the secrets of the past, in the hidden history of Transformers on Earth. Director: Michael Bay Writers: Art Marcum (screenplay), Matt Holloway (screenplay) Stars: Mark Wahlberg, Anthony Hopkins, Josh Duhamel, Stanley Tucci, Peter Cullen, Frank Welker