When Trevor suggests a vacation in the South of France, his young wife Sylvie is thrilled, and sees it as a chance for the two of them to re-invigorate their marriage. He has become distant, her step-daughter Harriet's hostility has proved a divisive force, and Sylvie hopes that a spell together in Nice will bring excitement and romance back into their relationship. However, shortly after their arrival she is faced with the possibility that Trevor has not been truthful about his reasons for the trip. The vacation turns into a nightmare when he vanishes in mysterious circumstances....  
Following the investigation and its aftermath, Sylvie makes a fresh start in London, and romance beckons. However, the past keeps intruding, and eventually erupts back into her life with shocking revelations. She is confronted with the pain of betrayal and forced to re-examine her marriage. She wonders if the past will ever go away, and if she will ever embrace the happiness she longs for …