Night of the Comet

A passing comet turns almost everyone in LA into piles of red dust. Survivors include a pair of cheerleaders who respond to the end of the world by shopping for disco clothes in a disco-free town. But these girls can handle the occasional zombie - another comet-related effect - with automatic weapons and karate moves. Meanwhile very camp scientists emerge from their low-budget bunker to reveal that the turn-to-dust thing is accelerating and they need to drain the blood of uncontaminated survivors. Suspecting that all this plus the cheerleaders might fail to excite, the film-makers also pack in twenty songs.