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It is revealed that thousands of
years ago there was a race of ancient Transformers who scoured the
universe looking for energon sources. Known as the Dynasty of Primes, they
used machines called Sun Harvesters to drain stars of their energy in
order to convert it to energon and power Cybertron's AllSpark. The Primes
agreed that life-bearing worlds would be spared, but in 17,000 BC, one
brother, thereafter dubbed "The Fallen", constructed a Sun Harvester on
Earth. The remaining brothers thus sacrificed their bodies in order to
hide the Matrix of Leadership—the key that activates the Sun
Harvester—from The Fallen, who swore to seek revenge upon Earth.
In the present day, two years after the events of the previous film,
Optimus Prime is seen leading NEST, a military organization consisting of
human troops and his own team of Autobots (including newcomers Arcee,
Chromia, Elita One, Sideswipe, Jolt, and the twins Skids and Mudflap)
aimed at killing the remaining Decepticons on Earth. While on a mission in
Shanghai, Optimus and his team destroy Decepticons Sideways and
Demolishor, being given a warning by the latter that "The Fallen will rise
again". Back in the United States, Sam Witwicky finds a splinter of the
destroyed AllSpark, and upon contact the splinter fills his mind with
Cybertronian symbols. Deeming it dangerous, Sam gives the AllSpark
splinter to his girlfriend Mikaela Banes for safe keeping, and leaves her
and Bumblebee behind to go off to college. Upon arrival, Sam meets his
college roommate Leo Spitz, who runs an alien conspiracy website, and
Alice, a co-ed who makes sexual advances on him. Back home, Decepticon
Wheelie tries to steal the shard, only to be captured by Mikaela. After
having a mental breakdown, uncontrollably writing in Cybertronian
language, Sam calls Mikaela, who immediately leaves to get to him.
Decepticon Soundwave hacks into a US satellite and learns the locations of
the dead Decepticon leader Megatron and another piece of the AllSpark. The
Decepticons retrieve the shard and use it to resurrect Megatron, who flies
into space and is reunited with Starscream and his master, The Fallen in
the Nemesis. The Fallen instructs Megatron and Starscream to capture Sam
in order to discover the location of the Matrix of Leadership. With Sam's
outbreaks worsening, Mikaela arrives at campus just as Alice—revealed to
be a Decepticon Pretender—attacks Sam. An irate Mikaela, Sam, and his
roommate Leo drive off, destroying Alice, but are seized by the Decepticon
Grindor. The Decepticon known as "The Doctor" prepares to remove Sam's
brain, but Optimus and Bumblebee turn up and rescue him. In an ensuing
fight, Optimus engages Megatron, Grindor and Starscream. Optimus manages
to kill Grindor and rip off Starscream's arm, but during a momentary
distraction while searching for Sam, he was blindsided then impaled and
blasted through the chest by Megatron and dies. Megatron and Starscream
depart as the Autobot team arrives to rescue Sam, unable to save Optimus.
After Prime's death, The Fallen is freed from his captivity and Megatron
orders a full-scale assault on the planet. The Fallen speaks to the world
and demands they surrender Sam to the Decepticons or they will continue
their attack. Sam, Mikaela, Leo, Bumblebee, the twins and Wheelie regroup,
and Leo suggests his online rival "Robo-Warrior" may be of assistance.
"Robo-Warrior" is revealed to be former Sector 7 agent Simmons, who
informs the group that the symbols should be readable for a Decepticon.
Mikaela then releases Wheelie, who can't read the language, but
identifying it as that of the Primes, directs the group to a Decepticon
seeker named Jetfire. They then find Jetfire at the F. Udvar-Hazy Center
and reactivate him via the shard of the AllSpark. After teleporting the
group to Egypt, Jetfire explains that only a Prime can kill The Fallen,
and translates the symbols, which contain a riddle that sets the location
of the Matrix of Leadership somewhere in the surrounding desert. By
following the clues, the group arrive at the tomb where they ultimately
find the Matrix, but it crumbles to dust in Sam's hands. Believing the
Matrix can still revive Optimus, Sam collects the dust and instructs
Simmons to call Major William Lennox to bring the other Autobots and
Optimus' body.
The military arrives with the Autobots, but so do the Decepticons, and a
battle ensues. During the fight, Decepticon Devastator is formed and
unearths the Sun Harvester from inside one of the pyramids before being
destroyed by the US military with the help of agent Simmons. Jetfire
arrives and destroys Mixmaster, but is mortally wounded by Scorponok. The
Air Force bombs the Decepticons, but Megatron breaks through the offensive
and kills Sam. In a vision, Sam meets with the other Primes, who tell him
that the Matrix of Leadership is not found but earned, which Sam has done.
They acknowledge Sam's devotion to Optimus, the last descendent of the
Primes, and instruct Sam to merge the Matrix with Optimus' spark before
bringing him back to life. The Matrix is reassembled from the dust, and
Sam uses it to revive Optimus. The Fallen arrives and overpowers the
Autobot team before stealing the Matrix and activating the Sun Harvester
unearthed by the Decepticon Devastator. In his final moments, Jetfire
volunteers his parts and spark to Optimus. With enhanced capabilities,
Optimus destroys the Sun Harvester and takes on Megatron and The Fallen,
killing the latter. Sam then finally reciprocates Mikaela's love as
Megatron and Starscream retreat and vow that their fight is not finished.
The film ends with Optimus sending a message into space saying that the
humans and Transformers both share a common past.
During the end credits, Sam returns to college. |
