Night of the Comet (1984)

Dir. Thom Eberhardt

Earth has been ripped to shreds after a run-in with a killer comet, and those who have survived are in a fight for their lives in this campy cult classic. Valley Girl Reg (Catherine Mary Stewart) and her sister (Kelli Maroney) discover they're two of the lucky few. But scientists are after them, and now they must run. Why? Because the researchers believe they need the blood of survivors to concoct a drug that can save them all from further ruin