Imaginative, impetuous, and wild Diana McFee (Evan Rachel Wood) cannot wait for her adult life to begin. While awaiting the final days of high school in the lush springtime, Diana tests her limits with sex and drugs as her more conservative friend Maureen (Eva Amurri) watches with concern. Then the two teens are involved in a Columbine High School massacre-like shooting incident at their school and are forced to make an impossible choice.