Set on a Cornish cliff, Atlantic House has been the jewel in the Carew family crown for centuries. Each year, the Carew sisters embark on their summer holiday, but they are as different as vinegar and honey. Prudence, hard-nosed businesswoman married to the meek and mild Francis, is about to get a shock reminder that you should never take anything for granted. Constance, loving wife to philandering husband Greg, has always been out-witted by her manipulative sibling. Suspecting that Pru wants to get her hands on Atlantic House, Connie won't take things lying down. When an old face reappears on the scene, years of simmering resentment reach boiling point. Little do the women know that a long-buried secret is about to bite them on the bottom ...