London on 3 September 1939 is in upheaval. War is inevitable. Into this turmoil steps Kate Sheridan, newly arrived from Ireland to live with her aunt and uncle and look for work. When she meets Flight Lieutenant Charlie Butler sparks fly, but he is a notorious womaniser. Should she ignore all the warnings and get involved with a ladies man whose life will be in daily danger?

Charlie Butler has no intention of getting involved with a woman. But when he meets Kate his resolve is shattered. Should he allow his heart to rule his head and fall for a nineteen-year-old Irish girl while there is a war to fight?

Private conflicts and personal doubts are soon overshadowed. Will Kate and Charlie's love survive separation, parental disapproval and loss?