Esme Jones and husband Aron have completed their family and have twin sons Jared and James. Esme's older sister Eden Reece is desperate for a child, but a hysterectomy has put paid to any chance of her becoming a parent. When Esme offers herself as a surrogate, Eden and husband Billy are delighted. However, when Esme notices the first fluttering of life inside her and a scan reveals that she is carrying a girl, both sisters are not prepared for the outcome which threatens to tear the fabric of the whole extended family apart.