The novel begins with 17-year-old Morgan contemplating why she feels empty inside. She maintains good relationships with her boyfriend Chris and sister Jenny, who is dating Chris’s best friend Jonah. The four teenagers spend most of their time hanging out together. Chris and Jonah have recently graduated from high school. Although Morgan and Jenny have a close relationship, their mother has neglected them in the five years since their father’s passing.

Morgan, Jenny, Chris, and Jonah head out to a graduation party. While Jenny and Chris look forward to indulging in drugs and alcohol, Morgan and Jonah choose to stay sober. Morgan notes how Jonah always saves a stash of watermelon-flavored candy for her in his car since he does not like the flavor. On the way to the party, Jenny confides in Morgan that she is planning on having sex with Jonah later that evening. Morgan expresses concern over Jenny’s declaration. As they continue to the party, Morgan realizes that her period is 12 days late and that she may be pregnant.

At the party, Morgan struggles to have fun due to her anxiety over being pregnant. She escapes outside, and Jonah joins her. Morgan realizes that she no longer feels empty when she is around Jonah.