Actually, the novel variation works, at least enough to make the 100-minutes far from boring. We still have the good guys vs the bad - in this case the "humanitarians" who search for a blood substitute rather than sit around & fear the fatal doom vs the CEO of a pharmaceutical company who places self-preservation and excessive riches above anything else. Conflict! Guess who wins?
Wrap it all up with a solution to the world problem that arrives with a hilariously delivered final statement & mounting music that suggests nothing less than a cinematic Second Coming, and you have a show that becomes a guilty pleasure - fun while it lasts, but terribly silly by its bat-shrieking conclusion. (Grade: B-)