Kasey is a scuba diver who comes up from scuba diving only to find that there is no more air. She is a mother desperately searching to see if her child has survived, therefore, she spends the remainder of the movie walking around in full wet suit while breathing through an oxygen tank. There are supporting characters along the way among the dead, such as a man using a hospital respirator and, my personal favorite, Anna. Anna is an elderly woman who is hooked up to a life support system and proceeds to explain to Kasey that she is waiting on a respirator because she cannot exhale and can only speak five syllables at a time. Bear in mind, the preceding explanation goes way the hell beyond five syllables, and the conversation they have afterwards does as well. I would not call these plot holes, I would call these 8 lane highways blown through mountainsides. You would be able to fly the Hindenburg through the holes in this plot. Furthermore, if there was no air, how exactly are they producing speech? Saying that there is no air would technically be saying there is no medium for sound waves to travel. This movie would have benefited from their being no speech because of the acting ability of the entire cast. The characters seem to be bored out of their skull, or perhaps maybe half asleep. Kasey herself usually carries a facial expression of boredom, complete with actual eye-rolls while she's talking.
