The Autobots continue to work for NEST, now no longer in secret. But after discovering a strange artifact during a mission in Chernobyl, it becomes apparent to Optimus Prime that the United States government has been less than forthright with them.

2010 film by Feng Xiaogang

A highly intelligent chimpanzee named Caesar has been living a peaceful suburban life ever since he was born. But when he gets taken to a cruel primate facility, Caesar decides to revolt against those who have harmed him.