TRANSFORMERS: THE LAST KNIGHT International Trailer and More Promotional Videos Don’t miss the new TRANSFORMERS: THE LAST KNIGHT international trailer and more promotional videos! The film, directed by Michael Bay (13 Hours, Transformers: Age of Extinction), stars Mark Wahlberg, Laura Haddock, John Goodman, Isabela Moner, Stanley Tucci, John Turturro, Josh Duhamel, Ken Watanabe, and Anthony Hopkins. TRANSFORMERS: THE LAST KNIGHT will be released in theaters on June 21. Optimus Prime finding his home planet, Cybertron, now a dead planet, which he comes to find he was responsible for killing. He finds a way to bring the planet back to life, but in order to do so he needs to find an artifact, and that artifact is on Earth .