While this movie will not win any academy awards, it was certainly much better produced and acted then 99% of the Syfy produced movies scifi fans such as myself typically end up enduring, etc. I would give it a 5-6 as a vote. The plot summary appearing on IMDb is not at all accurate (the son never disappears amongst other things, but Luke Perry does play a mysterious stranger with a hidden and menacing past which threatens the family amidst the turmoil of the general disaster).
The actors all give reasonable performances, they are not wooden or overacting in the manner typical of smaller budget productions. All three principals - Lauren Holly (very attractive), Steve Bacic and Luke Perry were decent.
However, one should be aware that this is not a slam bang action flick with all sorts of special effects, battles, etc. There is none of that in this movie. The movie is about a small family living in a rural area against the backdrop of something cataclysmic having occurred, but the hows and whats of that are never really delved into - rather the focal point of the story is how they are coping, the mysteries surrounding a stranger who has wandered onto their property, etc.
I would deem the movie to be more of a suspense/thriller against a quasi sci-fi backdrop.
On a plus note, it did keep our attention start to finish, and we were not hooting and hollering at grade F special effects and cheesy acting.
On a negative note, the ending was somewhat of a mystery to us. We have some theories, but you are better off to watch the movie and come up with your own.
I think overall this is the sort of movie actors do to keep paying the bills, but at least they gave it a decent go, and made the 90 minutes of the movie respectable rather then terrible.