Kitty is the story of a personality conflict between the wife of war-injured soldier and his wealthy, domineering, class-conscious mother. Mrs Clara St. George is an icy widow of London, a woman of affairs used to getting her own way. Displays of emotion are both foreign and repugnant to her. Alex, her only son, home from leave and soon to face the war in the trenches, feels scared and alone. In contrast, Mrs Sarah Greenwood, a doctor's widow who keeps a tobacco shop near Piccadilly, is a cheerful soul who shares life with daughters Coral and Kitty. Alex will walk into her shop and come face to face with Kitty before going across the channel and returning home a broken man.