Montana and her older sister Arizona have always been a team, sticking together through their plastic surgeon dad's string of divorces—and his not-so-subtle belief that "surgical assists" can be an asset to any woman. But when Arizona comes home from college with a boob job, the rift between the sisters feels insurmountable.
As summer in New York City heats up and Montana and Arizona grow apart, Montana befriends wild, bold, 23-year-old Karissa, who encourages her to live in Technicolor and chase new experiences—like a cute boy in the park. Bernardo becomes a beautiful distraction, and he looks at Montana in the way she wants to be seen. For the first time, she understands how you can become both lost and found in somebody else. But when that love becomes everything, where does it leave the rest of her imperfect life?