After losing her virginity to Ricky Underwood at band camp, Amy Juergens discovers that she's 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.

Lauren and Madison accidentally reveal Ricky's involvement with Amy to the school. Meanwhile, Grace is torn between forgiving Jack and moving on, and Amy experiences her first bouts of morning sickness.

Ben continues to pine after Amy, which results in them sharing their first kiss. Later, 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.

Ben's clingy behaviour begins to annoy Amy, who is also struggling to cope with her family life. Meanwhile, Jack seeks comfort from Adrian after his plans to see Grace fall to pieces.