After losing all her teeth in a freaky car accident, star swimmer and high-school weirdo, Diana, drained her mom's bank account to replace them with diamond teeth. Under immense pressure to maintain her grades, while dealing with her painful new smile, Diana's mental health is questioned by her best friends and she pushes them away. Diana finds herself isolated, alone, and resenting the effortless privilege many wealthy students at her private school enjoy. Making matters worse, a charismatic new student's arrival sparks Diana's jealousy, leading to a violent confrontation during swim practice.