"Transformers: Age of Extinction" is a 2014 science fiction film directed by Michael Bay. It is the fourth installment in the Transformers film series and follows a mechanic named Cade Yeager, played by Mark Wahlberg, who discovers a dormant Optimus Prime. As humans and Transformers face new threats, the film explores themes of trust and betrayal. The story unfolds in a world where Transformers are hunted by humans after the destruction caused in previous battles. Cade teams up with Optimus Prime and a group of allies to fight against a powerful new enemy, Lockdown, who seeks to capture Optimus for his own purposes.