This drama charts the life of Kim Soo Ro, the legendary founder of the city-state of Geumgwan Gaya during the Three Kingdoms Period.

Set during the reign of King Sukjong in the Joseon dynasty, the story focuses on Dong Yi, a water maid who gains the trust of Queen Inhyeon and later the favour of the king when he is moved by her prayers for the health of the Queen during the court disputes caused by Jang Hee Bin. Dong Yi becomes a concubine with the rank of sook-bin and bears a son who will later become the 21st king of Joseon, Yeongjo.

The story deals with one noble family who believes in its obligation and social responsibility towards the poor.

A story about the hospital, Jejoongwon. It was the first modern hospital in Korea established in the Joseon era in 1886.

King Jinpyeong did not have any sons to name as a successor to his throne. Thus he named his eldest daughter, Princess Duk Man, to be his successor. The drama will be about the life of Princess Duk Man who was later known as Queen Seon Duk, the first Queen of Silla.

A love story about Princess Nak-rang who fell in love with a spy from Goguryeo. She tore the drums of her country so that Goguryeo could attack her country, Nangnang-guk, without warning. However, Nak-rang's love story with Hodong is further complicated due to the fact that Nak-rang's older sister Ja Myung is in love with Hodong as well.