Josh and Heather prepare to say their "I dos" in Aspen, but first face off in a tense negotiation that could keep them from walking down the aisle. Josh Flagg lists a coveted lot in the Beverly Hills flats, but when his strategy backfires, he's left scrambling to keep his client. James and David try to close the deal, and bury the hatchet, when they have a shot at shattering the sales record in Culver City.