After the Autobots and Decepticons battle between razed Chicago, mankind that all alien robot is a threat. So Harold Attinger, a CIA agent, establishing a unit with the sole purpose is to hunt down all of them. But it turns out that they are being supported by an alien robot who is searching for Optimus Prime. Cade Yeager, a \\ u0026quot; expert robot \\ u0026quot ;, buy an old truck and when checking it, he thought no'sa Transformer. When you power it up, he discovers it's Optimus Prime. Then men from the unit are currently searching Optimus. He helped Yeager and daughter Tessa escape but was pursued by the hunters. They escaped and Yeager learn from technology, he had taken from the man that a contractor magnate and protection technology named Joshua Joyce is part of the gi'dang happened, so they came to find out what happened gi'dang.