How did Bumblebee fall from space to Sam Witwicky if in the latest movie Bumblebee was on earth in World War 2 and fighting. Did he go back into space or what? As I heard, the new Bumblebee movie is going to be a prequel and he is going to be a VW Bug. Are we supposed to just forget this or was there an explaination that I missed?
Are we supposed to just forget this or was there an explanation that I missed?
While this sounds a little facetious, I think that you are supposed to forget. Continuity in the Transformers Movie franchise has not been one of its strong points.
In any long running series, you are going to struggle with continuity. Even in cases where an author has sole control, things will be missed and sometimes events will not quite add up. (A lot of the questions on this site are due to this)
However this gets even more difficult when there are no long-term plans, and numerous different creative people are involved. Star wars and Marvel (movies) try to have some mechanisms to resolve this (see Lucasfilm Story Group for an example). However, the Transformers franchise does not seem to have the same guidance.
So as a suggestion, if you see the movie, perhaps consider it a stand-alone work which may enhance your enjoyment of it. While there may be bits that tie into other works, there may also be parts that make no sense. If you try to think too hard about it it may stop you from enjoying the Movie.
There are a number of fan theories shared online that this film may serve to reboot the Transformers franchise.
There's a feeling that since this film is a prequel, it could rewrite the history for the series. Section 7 is there, in the person of John Cena, but this far earlier story might serve as a starting point for a new series of films, perhaps with a lighter tone.
Optimus Prime is to appear, and there's a hope that his design may be closer to the G1 look, as Bumblebee's is.