On the playground between Valentine Avenue and 183th street in New York, Grandmaster Caz and Disco Wiz are the MCs ready for the “Beat Battle”. A bass and drum groove spins on the decks. It is just an ordinary summer day in the Big Apple where the MCs’ groove is block party law. Then the vinyl starts slowing down until it stops. New York lights go out one after another. Blackout. Nothing will ever be the same.