that was like, 'this compound is the only safe area in the world even though it sucks and resources are running out, the whole world is bad bad bad dead radioactive bad'
(and yeah, I just spoilered the hell out of the end, so anyone I show it too won't have the same surprise I did, but that's fine, because I figure no one really cares anyway)
so far S3 E7 'The Camp' is the only one that sounds remotely similar: "Mankind is now enslaved by an extremely powerful alien race in concentration camps. Although the foe seems unvanquishable, one woman dares to rise and challenge her Commander. Her example does not remain without an echo, but what will be the final result?"
Hulu has new Outer Limits, now I just need to find what the fuck episode it was that was like the serious version of Blast From The Past