I see nothing wrong with the plot, though I would wonder why anyone would want to put themselves so out of contact, regardless of whether a violent ex-felon were suddenly looking for them.
The filmmakers here were extremely clever in convincing us that this beach house was remote. What they did was give many shots of the young women driving, and driving, and driving. Throw in some long shots of the beach, with nothing going on, with waves, and more waves, and we see that this place is really quite remote, I mean really far away, from civilization.
During some of the conversations, there were peculiar jump cuts that I could not quite understand. Since we are at the same point of view each time, it was distracting, especially when the cuts were in the middle of a sentence.
The sound sometimes also dropped off, which again made me wonder if it was intentional. It was too frequent to be just bad editing... Or was it? I think also a few people misspoke their lines, getting the phrase correct the second time. Normally, of course, this would be edited out, unless the editors thought that they did such a great job the first time that they decided to leave the whole thing in?
There is a very attractive woman (Diana Prince) who goes topless for about 30 seconds (jump cuts strung together, each 10 seconds long = 30 seconds) You can't miss it, since the lead (Taya Parker) exclaims something like "Look - She's going topless!" right beforehand. Lucky for me, otherwise I would have missed it. By that point, I was not looking. You see, while I watched this "movie," I found myself suddenly fascinated by things in my living room that I had not really appreciated before. The coffee table over the carpet, for example. I was fixating on that more and more as this "movie" played out.
Let me give them some credit, though. There was a surprise ending. Something did happen that was not expected. And a lot of women were quite easy on the eyes.
I think that this movie could have been done a lot better. First and foremost, the editing needed a lot of work.