Married couple Dave and Leslie have decided it's time to have kids. They know it is a life changing decision. No more sleeping in late, no more spontaneous hiking trips, no cozy vacations alone. And worst of all, no more day long sessions in bed, naked, making love and eating take out. So to bid farewell to their old life they decide on a "last fling" in Las Vegas.
Although they agree that "what happens in Vegas, stays in Vegas," they find it isn't easy to remain detached and easy going when things begin to get hot and heavy. Dave, in particular, begins to have second thoughts when he realizes that Leslie's idea of a last fling may be more lusty and intense than he ever imagined.