Twenty-something Jenn Rees lives in her parents' basement, while slinging drinks three evenings a week at a local bar. The lifestyle of this late-rising, vacation-taking Party Girl, is about to change, however, when she becomes the 48 hour 'crash test mommy' to her older sister Kim's two assertive little children: Bobby, five, and Ainsleigh, four. Both women have something to prove over the weekend. Kim says that Jenn insists on giving her parenting advice, especially about disciplining the kids better. Kim wants Jenn to appreciate the 24/7 work that goes into being a mother, and that the "Yes, Mam, No, Mam" approach, while it sounds good in theory, doesn't always work in practice. In addition to running a tight ship, Jenn also wants to prove to Kim (and to the rest of her dubious family) that she is capable of being responsible when called upon.
—Anonymous