I'm sure all of us here have had at least one instance where we went to the theater to see a movie and it turned out to be radically different from what we were expecting? The ultimate example for me is "Alien 3".
I was expecting it to be essentially the same as "Aliens" in both style and plot; a direct continuation of where "Aliens" left off. I was expecting to see armed marines fighting large groups of aliens while Ripley, Newt, Hicks and Bishop tried to make their way back to Earth.
Instead I got a bald Ripley on a prison planet inhabited mostly by Englishmen who acted more like they were in a religious convent than a prison while two major characters from the previous film were killed off for no logical reason. The whole vibe of the movie just felt "off" and awkward.