Life is all about balance. So what happens when you throw a new baby into it?

Reagan (Christina Applegate) and her husband, Chris (Will Arnett), are the proud new parents of baby Amy. She may have been unexpected, but life's curve balls can be a godsend, literally. Unless you have a career that needs attention, which is exactly what Reagan has. So, bucking tradition, they decide Reagan's the one going back to work while Chris is going to be the stay-at-home dad. Easy, right? Well, not quite.

Back at work at her high-pressure job, Reagan immediately feels the push and pull of motherhood and career while her self-involved co-worker, Ava (Maya Rudolph), can't believe her best friend now has a baby (nor can she even remember if it's a boy or girl!) Then her Facebook-generation assistant reminds Reagan of the free-wheeling lifestyle she and Chris once had. She also remembers that no matter how rowdy the partying once was, she always managed to get home, something that makes her very proud.

Determined to prove that she and Chris still have a hot love life, and that she can be the perfect wife, mother, and career woman, Reagan spins a little out of control. But she eventually realizes that Amy is her new number one priority and somehow everything (except maybe Chris) is going to take a backseat to their new bundle of joy.