Despite suffering vicious cruelties at the hands of her widowed father during his lifetime, after his death, Isabel is shocked to hear that Luther Kenton was not her blood relative. Out of spite, he leaves Isabel the family, which holds bitter memories for her, while her twin brother Mark inherits the Kenton Engineering Works.
But it is 1914 and with the outbreak of war, Mark joins the RAF, leaving the management of the business to Isabel. A woman in a man’s world, Isabel fights to keep her brother’s legacy out of the hands of unscrupulous Jago Timmins – who lusts after the girl as well as the factory. Whatever Fate throws at her, Isabel is driven by the overwhelming need to discover the truth about her birth, and to find the love so cruelly denied her.