The film is about Kate ( Fey ) , a business woman , who wants a child but , discovering she has only a million-to-one chance of getting pregnant , decides to find a surrogate : Angie ( Poehler ) , a white-trash schemer . The plot concerns Kate ( Fey ) , a business woman , who wants a child but , discovering she has only a million-to-one chance of getting pregnant , decides to find a surrogate : Angie ( Poehler ) , a white-trash schemer .