In Los Angeles, Victor and his business partner Ted, a middle-aged bachelor, manufacture parlor games. Bored with his upper-middle class, suburban existence, Victor is having an affair with Jean, a twenty-one-year-old model, and neglecting his wife and nineteen-year-old daughter, Kim. While his wife suppresses any feelings of rejection through activity in neighborhood committees, where she meets a local writer of sex novels, Kim resents her father's absences and has an affair with Ted. When she happens to learn that Victor and Jean will attend a weekend encounter group retreat outside the city, Kim convinces the unwitting Ted to take her. There, she imagines seeing her father nude, while her mother, who has remained at home, has sexual fantasies about the novelist, with whom she ends up spending the night. To Victor’s embarrassment and anger, he discovers Kim’s presence during a group session the next morning and exchanges angry words with Ted, who leaves the retreat alone. Although his affair with Jean has now grown cold, Victor drives back to Los Angeles with both young women, who have befriended each other. When he returns home, Victor finds the house empty, as his wife is still with the novelist. Kim goes upstairs to take a shower, but returns, seductively wrapped in a towel. ...