Lisa sees the life of her gorgeous best friend Celeste as just about perfect: she has a gigantic house, two older sisters to coach her through the hazards of high school, and loving, lively parents. As Lisa's own home has long been a place devoid of joyful noise - her mother has shut herself off in her bedroom for years - Lisa joins the Diamond household, slipping into their routine of sit-down suppers and soaking in the delicious normalcy of Diamond family life. But what begins as the story of two young women living a charmed adolescence, one of mastering dance moves and the protocols of male-female interaction, soon swirls into an intoxicating novel of art, music, and self-destructive impulses as Lisa and Celeste dare each other ever onward.