After losing her virginity to Ricky Underwood at band camp, Amy Juergens discovers that she is pregnant. As Amy contends with her family life, and struggles to come to terms with her pregnancy, she seeks solace from her friends, Lauren and Madison. Meanwhile, Grace Bowman, the most popular girl at school, promises abstinence to her parents.moreless
Lauren and Madison accidentally reveal Ricky's involvement with Amy to the school. Meanwhile, Grace is torn between forgiving Jack and moving on with her life, and Amy experiences her first bouts of morning sickness.
Ben continues to pine after Amy, which results in them sharing their first kiss. Also, Amy shares the news of her pregnancy with Ashley - leaving their parents in the dark. Elsewhere, Adrian believes that Ricky is just using her for sex.
Adrian's father calls the police after she disappears from school. Elsewhere, the school learns of Ricky's visits to Dr. Fields, Grace is pressured into wearing her purity ring, and Ben and Amy consider having sex.
Adrian and Grace have trouble getting everything together for Amy's baby shower. Adrian is distracted waiting for her brother to call, resulting in her forgetting to invite anyone to the shower. Meanwhile on her way to the shower Amy goes into labor.