Sarah Huttinger's return home with her fiance convinces her that the sedate, proper, country-club lifestyle of her family isn't for her – and that maybe the Huttinger family isn't even hers – as she uncovers secrets that suggest the Huttingers are neither sedate nor proper.
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.