Middle-aged people at a barbecue playing croquet. It's Labor Day weekend, Randy and his wife are hosting. Steve and his wife accept the invite. Both couples play a game of croquet with unexpected results. Randy overhears Steve talking to another friend about an affair. Randy joins the conversation and Steve hesitantly confides that he's having an affair with a younger woman. Randy tends to the grill and sees an escalating encounter between Steve and Randy's seventeen year old daughter, Claire. Steve is fucking Claire. Claire is using Steve.