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.

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.

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.

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.

Ben and Amy's relationship hits a rough patch when Ben tells her that he needs some space. Amy is angry and sad at his decison and decides to give him a ring that she gets from Ashley in order to prove to him that she accepts him for who he is and loves him. Ashley and her argue and Ashley accuses her of wanting to give up the baby so that she can keep Ben. Ben has doubts about his relationship with Amy and thinks that she still has feelings for Ricky. Jack and Shawna argee to see each other. Lauren and Madison stand by Amy and Alice and Henry stand by Ben. Adrian and Grace argue over Ricky and get into a catfight, but become closer to each other as a result. Elsewhere, Grace's parents apologize to each other and Anne and George interview people who are interested in adopting Amy's baby,but George makes them leave before Anne gets a chance to talk to them because they want a closed adoption rather than an open adoption. Meanwhile, Ricky apologizes to Amy for him accidentally breaking up her and Ben. He talks to her about Ben and the baby, Amy gets upset, and Ben, Adrian, and Grace catch Ricky and Amy hugging. George's gay co-workers come by and talk to George and Anne about them wanting to adopt Amy's baby, and Amy agrees. Ricky tells Jack that he is through with both of Adrian and Grace for good and wants to be with Amy. Amy tries to pay Ben a visit but Ben's father intervenes."

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.

Adrian makes an attempt to get George and Anne reconciled, but only for her own selfish reasons.

Adrian and Amy's fighting escalates and Ricky intervenes.

Amy attempts to keep Ben's attention. Meanwhile, Grace makes an impression on Adrian.

Relationships are on edge, with Ben and Amy dealing with their own relationship drama, as well as Adrian and Ricky and Grace and Jack.

Grace's love of self-love comes out at school in the form of a campaign called "Just Say Me". Which has girls all across school abandoning sex with guys in favor of a more personal activity that has the same end result.

Meanwhile, Adrian's own campaign of trying to be Amy's friend bears fruit when Amy invites her over for a visit.

Amy goes on a date with Jimmy. Meanwhile, Ashley pursuades George to vist Anne to rekindle their relationship, and Griffin sends his cousin Grant to get to know Ashley. Ben visits Grace and tells her that he wants to be friends, and as he leaves, they kiss. At the same time, Amy and Jimmy kiss. After George knocks on Anne's appartment door, Josh answers and explains Anne is with Mimsy and might come back home. While Ricky encourages Amy not to get caught up with Ben and Grace, Adrain's parents tell her they will get married, therefore causing her mom not to take the job offer in New York. Anne tells Ashely that she doesn't think it would be good for her to return home.