After the battle between the Autobots and Decepticons that leveled Chicago, humanity thinks that all alien robots are a threat. So Harold Attinger, a CIA agent, establishes a unit whose sole purpose is to hunt down all of them. But it turns out that they are aided by another alien robot who is searching for Optimus Prime. Cade Yeager, a "robotics expert", buys an old truck and upon examining it, he thinks it's a Transformer. When he powers it up, he discovers it's Optimus Prime. Later, men from the unit show up looking for Optimus. He helps Yeager and his daughter Tessa escape but are pursued by the hunter. They escape and Yeager learns from technology he took from the men that a technology magnate and defense contractor named Joshua Joyce is part of what's going on, so they go to find out what's going on.

this is the really the worst movie i have seen this year.Let me make this short .It is extremely boring .I wanted to get out of the theater is mid way.plot is confusing.action and graphics are excellent,but whats the point when there is no story.above average acting,repeatedly irritating jokes,unnecessary music .music is good but it is added at unnecessary places.the movie could have been wrapped up in 30 min but it almost stretched for 3 hours.older actor was definitely a better actor.you wont be able to sit throughout the film if you haven't watched the other parts,but even if you have watched the other parts it wont make much of a difference.Don't waste you time and money for this movie.