Catherine Dessin is 15 and still at convent school when the Germans enter Paris in 1940. Her parents are patriots and she is taught to hate the enemy, but two years later she falls in love with a senior and married German officer, defying the anger of her family and friends.Catherine grows up abruptly when Klaus, the German officer, realizes the evil of the regime he is serving. Klaus now struggles with his own conflict of loyalties—between Catherine and his family and between his patriotic duty and his hatred of Nazism.