Director Michael Bay has previously said that Transformers: Dark of the Moon, the third installment in the Transformers franchise, would blend "what we know as history growing up as kids with what really happened" in the space race between the U.S. and the former U.S.S.R. That promise was upheld in the teaser trailer, which showed that the mission to the moon was actually to uncover the wrecked transformer, Sentinel Prime.
More recently, Bay has said that Dark of the Moon was more "intimate" as it followed "a small group" that had "no cavalry coming." That promise is fulfilled in the sequel's first trailer and brief plot summary.
When a mysterious event from Earth’s past erupts into the present day it threatens to bring a war to Earth so big that the Transformers alone will not be able to save us.
Transformers: Dark of the Moon was written by Ehren Kruger and stars Shia LaBeouf and newcomer Rosie Huntington-Whiteley along with John Malkovich, Josh Duhamel, Patrick Dempsey, John Turturro, and Frances McDormand, who is revealed in the trailer.