The future looks uncertain for the three couples in Series Four of Cold Feet. Adam (James Nesbitt) and Rachel (Helen Baxendale) desperately want to be parents and face rigorous adoption procedures, however unknown to Rachel, Adam's first love is back on the scene to win him back. David (Robert Bathurst) is battling to keep his marriage together after his short-lived affair but Karen (Hermione Norris) is not warming to his efforts and her drinking spirals out of control. Fortunately for her, her editor Mark (Sean Pertwee) comes to the rescue giving Karen new hope.