Ely, 1643. England is convulsed by Civil War, setting King against Parliament and neighbour against neighbour. As the turmoil reaches her family home in Ely, 19-year-old Bridget Cromwell finds herself at the heart of the conflict. With her father's star on the rise as a cavalry commander for the rebellious Parliament, Bridget has her own ambitions for a life beyond marriage and motherhood. And as fractures appear in her own family with the wilful, beautiful younger sister Betty, Bridget faces a choice: to follow her heart, or to marry for power and influence, and fight for a revolution that will change history...