Transformers: Age of Extinction offers more of the same robotic action, a lot product placement, plus an imaginary version of Hong Kong, but much less humor, and sex appeal is nowhere to be found.  I can understand the change of a human cast, even though they are unexplained in the movie, but I don’t see why the autobots are different.  This just does not help with the continuity.  We also see new non-automobile robots that are introduced as really powerful, but that part of the story is even less convincing than the rest, and they do not really demonstrate the promised powers or fierceness that should be comparable to Optimus Prime, the leader of autobots.  Yes, this movie is too long for a simple plot.