Among the fragrant herbs and bright flowers of Provence, under the careful supervision of an ambitious mother, four girls grow up - Margarita, Eleanor, Sancha and Beatrice. They are predicted to become queens, because only the sisters have the power to stop the cruel feudal wars. Margaret's marriage to the young Louis IX would make her queen of France, and Eleanor, betrothed to Henry III, would become ruler of England. Shy Sancia and wayward Beatrice will marry noble feudal lords, who should also become kings. It would seem that peace will finally reign in Europe. But rivalry, love for spouses and ambitions of relatives will not allow the sisters to conclude a long-awaited alliance...