A patriotic drama played by one of the most beloved actresses of early Italian cinema: Mary Cléo Tarlarini is Mary, a high society lady who devotes all her dedication to the Italian patriotic cause, overseeing a war hospital and supporting the refugees. Luciano dello Stelvio, a young officer, falls in love with her, but after torments and family misunderstandings, he will sublimate his feelings in the love for his Country and will depart for the war, praised by Mary and by her daughter Emma, who had initially suspected them of having an affair.