Transformers: Age of Extinction is a 2014 American science fiction action film based on the Transformers toy line. It is the fourth installment of the live-action Transformers film series and a sequel to 2011's Dark of the Moon , taking place five years after its events. Like its predecessors, it was directed by Michael Bay and written by Ehren Kruger , with Steven Spielberg and Bay as executive producers. It stars Mark Wahlberg , Stanley Tucci , Kelsey Grammer , Nicola Peltz , Jack Reynor , Sophia Myles , Bingbing Li , Titus Welliver , and T. J. Miller . It does not feature the original human cast from the previous three films, and instead introduces a new human cast and many new Transformers, including the Dinobots. Returning Transformers include Optimus Prime , Bumblebee , Ratchet, Brains, and Megatron (now kno...