It's mediocre. The gist is simple and overly used: a controlling father gets to learn to accept people for who they are but it's practically the only thing they build the franchise on since it's pretty much the growth that already been written around for the first movie. Four movies in and there's no depth to any other characters, that's just lazy.
Also wanna to have a "glimpse" of my "what if"... What kind of courage and love it takes to make the choice " I choose us"... PS: The Chinese subtitle is totally SHIT = = Ignore it, for Ur sake.