“Arcadian” (** out of four) was a turgid melodrama about a father (Nicholas Cage) and his twin sons (Jaeden Martell and Maxwell Jenkins) who are determined to survive at an isolated farmhouse at the end of the world. Well-made and well-acted but meandering and pointless and film doesn’t have enough story to sustain itself for its feature running time. Can’t somebody make an end-of-the-world movie that’s actually fun?