SHELTER is a single-location thriller set in an underground bunker. The world has just been destroyed by an apocalypse and the story follows the fortunes of the existent survivors as they come to terms with their new world, which very much exists within the confines of four walls and a ceiling and floor.
Inevitably this is low budget stuff which focuses on the psychological angle (as it doesn't cost anything), but the surprise is that it's pretty decent. The shooting style is strong and the film feels both realistic and claustrophobic throughout. The day to day character building stuff is quite interesting, so it's a shame that they spoil things with a non-linear style in which the time frame is all over the place; this makes things needlessly confusing and more than a little annoying.
Review by Leofwine_draca from the Internet Movie Database.