Sorry man, the story was pieced together by manatees in a tank. None of them really fit together if you think of it, the first movie the President announced the Autobots existed on television at the end, plus it is hard to hide two story giant robots battling in the center of downtown anywhere. Of course the second one completely glosses over this point and acts like there was a huge cover up and that there was a special team of soldiers fighting along side the Autobots to keep the Decepticons a secret... something like that. When you finally get to DOTM there have been several battles in public, including the destruction of an Egyptian pyramid but still the Transformers are secret. It makes no sense. Michael Bay likes spectacle, it has nothing to do with actually making sense, just loosely pieced together story so they can ramp up to then next fight or explosion. If you skip every part without a transformer in the movies then it is just a slug fest of giant robots. Why do I need to know giant robots have bodily functions? Jetfire farting comes to mind.
Speaking of the addition of human actors, Michael Bay seemed to enjoy adding as many penis jokes as he could in all the films. He had Bumble Bee pee on one of the agents in the first film, there were several masturbation jokes, he enjoyed seeing the male characters in compromising situations with their pants down, the over the top sexual themes with the female cast and not to mention giving Devastator testicles. I fail to see how it was a children's movie even though it was distributed directly to them.
The acting was over the top and spastic because I suppose Bay likes that in his movies, looking back at Bad Boys with Martin Lawrence being the spaz, Armageddon using Ben Affleck in the same position, The Rock with Nicholas Cage in more of the same... I could go on and on. The best thing to do is just not watch a Bay film. I would rather boycott the guy, he can't keep messing up my childhood. Now he has the Teenage Mutant Ninja Turtles to mess up for me.