Jenna is happily enjoying an affair with her married boss, Nick, until he throws a weekend-long thirtieth birthday party at a country hotel, and invites his wife, Lisette, his sister, Heather, and several important business colleagues. Lisette seems to share Nick's passion for Jenna, while innocent Heather is led astray by a handsome waiter with a penchant for motorbikes and leather. And overseeing the party, desiring and desired by all, is the enigmatic Robin.
Caught between business and pleasure, Jenna attempts to maintain a professional façade, while those around her toss theirs aside and give in to the weekend's sensual indulgences. However, Nick's power is not as strong as he'd like to think and he is soon subjected to a takeover bid for both his business and his senses...