Two years have passed since young Sam Witwicky saved the universe from a decisive battle between two races of robotic aliens at war. Despite his extreme heroism, Sam remains a normal teenager with the day-to-day concerns of preparing to go to college, leaving his girlfriend Mikaela behind, and separating from his parents for the first time. Sector 7 has been dismantled and Agent Simmons ( John Turturro ) has been fired. A new agency, NEST, has been created in its place. Employing field-experienced controls like Lennox ( Josh Duhamel ) and Epps ( Tyrese Gibson ), NEST aims to work closely with the Autobots to avoid another deadly confrontation with the Decepticons.