An action-horror, wherein a group of strangers are trapped in a desert diner by a siege of zombies... except they aren't zombies, they're living humans who are possessed by angels-gone-bad, soldiers in the army of the Archangel Gabriel, whose mission is to kill the unborn child within. Only the angel Michael, one of Gabriel's generals now deserted, can save them, allowing the baby to fulfil his destiny as the saviour of mankind.
Well, it's a giggle, isn't it? Lots of religious references, naturally, along with the usual horror tropes of the rickety-house-under-siege and scampering-possessed-people-climbing-the-walls. There's a fair bit of Terminator 2 in there as well, from the voiceover bookending the film to the copycat shot used for the ending. The whole angels-with-machine-guns thing is a bit silly, and the big fight between Gabriel and Michael (I'm not sure this counts as a spoiler - what the hell else is going to happen?) is kinda ludicrous, but Paul Bettany carries it off well enough. The final turning point at the end is a bit... well, it's a bit hard to swallow, really, but that's okay.
I wouldn't have been disappointing by this had I seen it on a Friday night for seventeen bucks, even if it won't live long in the memory. That's the acid test for me - is it worth the price of admission and the time spent watching it? Also, it's not a million miles from a feature script I'm working on myself (yes, mine is a little derivative too, but I'm working on that), so it's good to know where to steer clear.