It's the last shot of the day on a ridiculously hilarious, B-level sci-fi romance film, and the cast and crew are preparing for the last few takes. Mike, our boom operator, assembles his equipment, turns on his boom microphone, and consequently envelops us in a world that has never been seen or heard before on film; at least, not quite like this... Boom Up! unravels all the behind-the-scenes secrets, absurd characters, and general chaos that can only occur on a film set -- all from the point of view of the boom microphone.