A historian by training, American writer Patricia Camden sets the action of her love story in Europe at the beginning of the 18th century. The widowed Flemish beauty Cattier de Saint-Benoit concentrated all her love on her little son. But he lives only thanks to the medicine that the Turk El-Muzir, the lover of her sister Lise D'Agenet, can make. English Colonel Becket Thorne intends to take revenge on the Turk, in whose captivity he spent seven long years, and hopes that Katie will help him in this. Kathier is under the spell of the irresistible Englishman, but what will happen to his son if El-Muzir dies? Duty and feeling enter into a duel, the outcome of which is impossible to predict...