The White Stag is a mythical retelling of the founding of Hungary. It blends fantastical, mythical, and historical figures together to create a larger-than-life account more akin to legend than historical fiction.

The story follows Hunor and Magor, legendary characters in Hungarian mythology believed to be the ancestors of the Huns and the Magyars. They are presented as the sons of King Nimrod, a monarch mentioned in the Book of Genesis. Other historical figures such as Attila the Hun and Bendeguz the Hun chieftain are crossed over with fantastical creatures like Moonmaidens, changeling fairies from the realm of myth. Altogether, Seredy takes from national legend, the Bible, fairy tales, folk tales, and mythology to create an epic all her own.

Seredy's aim in writing the book was to foster pride in Hungarian identity at a time when the country was undergoing a loss of territory after World War I. She was uninterested in creating a dry, purely factual narrative around the founding of the Hungarian nation. She preferred the emotion and romance of legend. Her blending of history and legend was meant to celebrate Hungary's heritage, and judging from the success of the book upon its original publication, she reached her goal.