During a doctor's visit, successful single Kate Holbrook learns she is infertile, shattering her longtime dream of motherhood. Determined to have a child, the career woman decides to use a surrogate and hires Angie Ostrowiski, an eccentric small-town girl. The expectant mother’s meticulously planned world falls apart when the unpredictable surrogate fights with her boyfriend and moves in uninvited. Now the two complete opposites must live under the same roof, go through a series of absurd domestic mishaps, and fundamentally rethink their outlook on life.