"Queen Seondeok" tells the story of Princess Doman (played by Lee Yo-won), who was abandoned as a child due to an ominous prophecy. Through relentless effort and navigating power struggles within the palace, she grows to become the first queen of Silla - Queen Seondeok.
Under the circumstances where Misil (played by Ko Hyun-jung) wields great power in the palace, King Jinpyeong and Lady Maya gave birth to twin daughters. However, for the king, the birth of twins was considered extremely unlucky, signifying the omen "the sacred bone line will end with a male." Reluctantly, King Jinpyeong sent someone to send the younger daughter Doman away, but Misil secretly sent people to pursue and kill her. At a critical moment, Doman was saved by the legendary Hwarang figure Moon-u, who then entrusted her to Jiso-hwa, one of King Jinpyeong's maids, to raise. Jiso-hwa took Doman to the desert regions of China and raised her in a small inn. Princess Doman's greatest enemy, Misil, used her extraordinary beauty to gain the favor of King Jinheung and seize power in the palace. Ambitious Misil, after the death of King Jinheung, installed the young King Jinpyeong on the throne. When King Jinpyeong's wife gave birth to twin daughters, Misil once again planned to...