At King Taejong's coronation banquet, he and Queen Wonkyung celebrate their love and trust. But their bond is tested when Yeongsil, who secretly raised Bang-won's child, reappears.
Yeongsil disrespects Wonkyung, believing in the king's favor. When Bang-won takes another woman-Wonkyung's trusted maid Charyeong-his wife finally reaches her breaking point.
A rebellion breaks out, and Wonkyung sets aside her resentment to help Bang-won. But his plan to cut ties with powerful noble families puts her own family in danger.
King Bang-won wants to pick a political bride for the crown prince, but Wonkyung insists on choosing based on merit. She publicly challenges his decision.
Queen Wonkyung discovers corruption among royal relatives but is framed for treason. With the people's help, she returns to the palace and reminds Bang-won of their shared dream.
King Bang-won finally agrees to replace the crown prince. Wonkyung ensures their son, Prince Chungnyeong, presents his vision for the future-laying the foundation for a great Joseon.