Kirstie comes to the rescue of Louise, whose first-time flat purchase has turned into such a money pit that she's moved back in with her parents, renting out the flat's only habitable bedroom to cover the mortgage. Young lovebirds Ferne and Peter have only kitted out the bedroom in their new home so far and need to get cracking on the rest of their flat. And Kirstie discovers ways to decorate on the cheap when she visits a Somerset cottage owned by film set designers.