I can't believe there are so many good reviews.
Plot: it is very predictable and doesn't bring anything new. You may notice some plot holes. Also it messes with timeline of previous films.
Characters: nothing interesting about them, they are just flat: good guys, bad guys. Bumblebee acts as infant child 80% of the movie. He is also always protected by a plot armor, no matter how much damage does he take, he is still alive.
Movie is oversaturated with oneliners. There were only couple decent jokes, all others fell flat all the time.
Action scenes are just mediocre. Previous transformers had better ones.
In conclusion, Bumblebee is neither personal film nor an action movie to watch in a company.
