Alison is a career driven woman who has just been given an on air job with E!. She lives with her sister and her family and stays in their pool house. As a treat Alison goes to a nightclub to celebrate her newly earned promotion. There she meets Ben and after a night of drinking they have intimate relations but due to miscommunication do not use protection.
The next morning they try to get to know each other a little bit and when they discover they have nothing in common with each other they go their separate ways. Eight weeks later during an interview with James Franco, she starts to get sick and vomit. At first she thinks she ate some bad food and then realizes that she could be pregnant.
Still unsure if she was actually pregnant she contacts Ben for the first time after their one night stand. He goes with her to her appointment and it is confirmed she is pregnant. Ben's dad is excited about the pregnancy but Alison's mom encourages her to have an abortion but she decides to keep the baby.
Ben decides to support Alison and because of this they try to give their relationship a chance. In an awkward moment Ben gives Alison an empty box to propose to her saying that he would eventually buy her a ring but she says that would be moving too fast.
Eventually their relationship goes downhill and after a heated augment when they have different views of the deception her sisters husband was pulling on her they break up. When Ben has a long talk with his father he begins to take his responsibilities as a soon to be father seriously. He moves out of his friends house, gets a job in an office, and rents an apartment with a baby's room.
When Alison goes into labor she calls Ben up because she can not get a hold of her doctor and her sister and her family are out of town. While in the delivery room they make up and welcome a baby girl to the world and begin a new life together.