In this historical fiction drama, a noblewoman from an indigenous mercantile nation marries into the royal family and ends up giving birth to the next king. Berta is wed to the king as his second wife in a loveless, political marriage. However, after Berta falls pregnant with his child, the royal palace is thrown into disarray. The king's first wife stews in jealousy and a deep-seated sense of betrayal as Berta and King Harold's relationship begins to change.