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.

Amy contemplates adoption for her unborn child. Meanwhile, Ashley and Amy attempt to persuade their father to not leave town, and Jack and Adrian grow closer.

Amy shares the news of her pregnancy with her mother, Anne. Later, Amy's absence from school sparks a rumour that she's having an abortion.

Ricky wrestles with the consequences of his actions. Meanwhile, Grace experiences difficulties with Tom, and Ben and Amy's relationship begins to sour.

Amy and Ashley's grandmother visits. Elsewhere, Adrian flaunts her budding friendship with Grace.

George bonds with Amy and Ashley. Elsewhere, Tom hires a "friend" for the night, and Lauren is caught kissing Ricky.

Amy faces her first day back at school, while Cindy Lee encourages Adrian to foster a relationship with her father.

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.

Assisted by their friends, Ben and Amy marry in secret. Meanwhile, Tom asserts his independence after meeting a new girl.

The parents of Ben and Amy learn of the wedding, and the news leads to a brief reunion by George and Anne. Meanwhile, Adrian's father is bent on finding out who created the fake ID's.

Ricky's father comes to town with some advice for him on how to be a parent.

Amy has the opportunity to find out the sex of her unborn child. Meanwhile, Jack does community service and believes that he sees Bob violate his parole.

Amy and Ricky consider adoption as a possible option. Meanwhile, George's co-worker shows interest in adopting Amy's baby.

Ashley tries his best to get Amy and Ben back together again, whilst Rick tries to sabotage the adoption process.

Adrian wants to mix things up a bit and tries to change her look, Jack is still bringing out his thoughtful side by raising money, and Anne might soon be off the unemployment list.

Amy gets help from her friends on what to do about the baby.

As Amy's due date inches nearer, Grace and Adrian decide to throw a baby shower for her. While preparing for the party, Jack and Grace have a moment where they reconnect.

Amy goes into labor and she and Ricky keep looking back to when they first met at band camp and how Ricky charmed her into having sex with him. Tom tries to get Jack and Grace together again, and Adrian discovers she still cares for Ricky.

Amy has trouble adjusting to life as a mom as she gives birth to her baby. Meanwhile, Ricky likes fatherhood and becomes friends with Ben; and Anne is surprised when George and Ashley decide to move out.