In New York City in the days following the events of 9/11, Monty Brogan is a convicted drug dealer about to start a seven-year prison sentence, and his final hours of freedom are devoted to hanging out with his closest buddies and trying to prepare his girlfriend for his extended absence.

A ticking-time-bomb insomniac and a slippery soap salesman channel primal male aggression into a shocking new form of therapy. Their concept catches on, with underground "fight clubs" forming in every town, until an eccentric gets in the way and ignites an out-of-control spiral toward oblivion.