Safe to say that this is one of the WORST films I've ever forced myself to watch. It isn't about what it is about. It is not about the what happens due to the sun going dark. That is completely irrelevant. So here is my thoughts broken down.
Positive: It's only 95 minutes.
Negative: From the start when the patriarch is shown I realized I didn't care if he died. In fact, the sooner the better. The mentally unstable, totally screwed up family living in a stupidly overdecorated large home didn't at any time at all draw my empathy or sympathy. Someone should have shot Mr. Dad years ago. There was nothing tying anything to the purported event of the sun going dark and whoever mr. dad was asking to come save them did the world a favor by leaving him. Overall the characters were flat, boring, and had no reason to go back to that overdecorated home to begin with. The sons should have come by, grabbed little sister and psychodamaged mother and left mr. dad.
Waste of film.