Transformers 3: Dark of the Moon" plot begins near the end of the war in Cybertron with the Ark carrying the leader of the Autobots: Sentinel Prime (Leonard Nimoy). The ship becomes damaged during its escape, crash lands on the Earth's moon and gets picked up on radar at a station in New Mexico. President John F. Kennedy orders the rush of the space program in order to land Americans on the moon to lead a covert mission to search the alien craft in 1969. The astronauts investigate the ship and record footage during the twenty-minute black out. Their knowledge returns with them back to Earth until the Autobots and Decepticons surface in the public eye decades later.
The plot of "Transformers 3: Dark of the Moon" kicks into high gear with Sam Witwicky (Shia LaBeouf) unemployed despite getting a Medal of Honor from President Obama and an ivy league education. His bad luck did not prevent him from scoring another hot girlfriend in the lovely shape of Carly Spencer (Rosie Huntington-Whiteley). Job Interviews bring more embarassment and strain in his relationship until he lands one with egomaniac Bruce Brazos (John Malkovich) after a recommendation by Carly's boss. Meanwhile, the Autobots trek around the world solving human conflicts to protect their newly adopted home. A mission to Chernobyl uncovers a deep secret the humans kept from the Autobots.
Cybertron technology discovered from the nuclear site proves the humans are aware of the existence of their race years before "Transformers 3: Dark of the Moon" and the plot soon thickens. The Autobots travel to the moon on a space shuttle to recover Sentinel Prime's weakened body and mysterious technology, and returned to Earth to revive their dormant leader. Optimus Prime (Peter Cullen) uses the matrix of leadership to revive Sentinel Prime and understand the true nature of the Pillars from the Ark. Meanwhile, a broken Megatron (Hugo Weaving) and the remaining Decepticons appear to set in motion their devious plan by assassinating humans involved in the space program. Sam Witwicky soon learns something evil is afoot when a Decepticon kills his co-worker who warns him about a conspiracy that runs deeper than the lunar landing cover up. Optimus relunctantly kills Sentinel due to his betrayal and looks on with the hope to rebuild Earth and prevent the Decepticons from harming any more humans.
Sam Witwicky knows if there is anyone who knows about secret plots, it is Simmons (John Turturro) who returns to "Transformers 3: Dark of the Moon" once he wiped the drool from his mouth. They hunt down facts about the deaths of numerous individuals with ties to NASA and realize the Decepticons enlisted humans to do their dirty work. After finding a Russian cosmonaut, Sam and company realize the Decepticons mined the Ark already for hundreds of Pillars and allowed the Autobots to find Sentinel in order to revive him. It doesn't take long for the Decepticons to attack and, eventually, Sentinel reveals he made a deal with the Decepitcons to transport more Decepticons to Earth, so they order the United Nations for the Autobots to flee Earth. World leaders buckle under the extreme demands of the Decepticons to avoid a widespread attack across the globe.
The Autobot space shuttle is destroyed at launch and the Decepticons execute their plot to set the Pillars around the world to bring Cybertron to Earth and enslave mankind to help rebuild their barren planet in "Transformers 3: Dark of the Moon." Sam and Epps (Tyrese Gibson) decide to travel to Chicago to save Earth and Carly but meet up with the Autobots who faked their death to fool the Decepticons. Lennox (John Duhamel) and his team joins up with them to serve some justice and take out the evil robots. They manage to destroy the head Pillar and stop Sentinel's plan to bring Cybertron to Earth.
– Eduardo Camacho