The year is 1402. Margrete has achieved what no man has managed before: She has gathered Denmark, Norway, and Sweden into a peace-oriented union, which she single-handedly rules through her adopted young son Erik. But the union is beset by enemies, so Margrete is planning a marriage between Erik and an English princess. An alliance with England should secure the union's status as an emerging European power, but a breathtaking conspiracy is underway that could tear Margrete and everything she believes in apart.