In a world on the brink of transformation, four men and one woman shape the fate of kingdoms, coasts, and seas.

Afonso, the iron-handed king of Portigalis, rules with fear and gold, yet even his power cannot tame the restless ocean. To the east, the fierce and united kingdom of Castile rises, driven by conviction and the promise of conquest. Across the islands, Ferran consolidates fortresses and fleets, while Ricky drifts between chaos and cunning, sensing a greater force approaching. Amid them all, Dinis emerges?a count turned master of ships and men?who knows both the land and the waters like no other.