Caroline likes to be in control at work, at home and in the bedroom, where she calls the shots with mild-mannered husband Joe. Caroline makes sure their love life is fun, foul-mouthed and properly dirty. But when brother Harry and his wife Lizzy are forced to move in, the two will try her patience. The lazy, nosy Lizzy is intent on seducing Joe, while Harry makes no effort to find a new place to live or keep his wife in check. When strange men start turning up at their door, it’s time to take action. With inspiration from her friend Mary, Caroline discovers the truth about the pair, and will need to use her powers of sexual creativity to keep Joe focused on her. She’ll need to persuade Harry that a ‘strict approach’ with Lizzy is necessary, and show Lizzy that a strong woman must demand what she really wants, even if what she wants is to be treated like a bad girl!