If I remember correctly there were some bad guy's I think they might have even been like a motorcycle gang,while the 15-20 people living in that underground bunker were like vigilanties or mercenary's or something.I even think there was a child or two with them.It was kinda like a who survived the nuclear bomb scare thing of the 80's.
Well what could that be hmmmmmmmmmmmmmmmmmmm..........
If you cant get any more exact than that no one can help you, your like the guy what the video store:
"I would like the film with the guy and the girl who like fall in love"