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.

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.

Grace hands in her pompoms after she's caught on tape defending herself against two drunken men. Meanwhile, Amy finds Ben's clingy behaviour very irksome.

Ben proposes to Amy after learning of her pregnancy. Meanwhile, Amy contemplates having an abortion, and George leaves home and moves in with Cindy Lee - Adrian's mother.

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

Ricky wrestles with the repercussions of sleeping with Amy. Meanwhile, Amy considers moving in with her grandmother, Mimsy.

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.

Anne and George are reunited after Amy and Ben's parents find out they got married, and Adrian's dad tries to get to the bottom of where the fake IDs came from.

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.

Amy and Ben struggle to get along when Ben tells her he wants some time to himself. Anne and George start looking for suitable adoption parents.

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.

Amy attends her baby shower given to her by Adrian and Grace.

While waiting for her baby to be born, Amy flashes back to when she met Ricky at band camp.

Both friends and family come for the birth of Amy's baby, and Amy has some difficulties with becoming a mother. Ashley and George move out of the house.