This drama charts the life of Kim Soo Ro, legendary founder of Geumgwan Gaya, the ruling city-state of the Gaya confederacy, which dominated sea trade and iron working during the Three Kingdoms Period. Kim Soo Ro's fiery temperament, charisma and intelligence are his only defense in the extended political struggle, with competition for the throne from his half-brother and lifelong rival, Ijinashi, his former friend Suk Tal Hae, and the dangerous ambitions of Shin Kwi Gan.
In the Joseon Dynasty period, the kingdom was enveloped in a political maelstrom. Cheo Seon was born as a posthumous child and separated from his mother immediately. When he meets So Hwa, the daughter of a powerful noble, he falls in love with her immediately. He voluntarily becomes a eunuch to be close to So Hwa. Entering the royal palace, he sees King Sung Jong and So Hwa spend their first night together. He becomes So Hwa's loyal protector. As the political battles rage on among the courtesans and wives in the palace, So Hwa is chosen by the king to be his queen and Cheo Seon vows to be her loyal servant. But So Hwa is eventually dethroned as the queen and leaves the palace in disgrace. Cheo Seon helplessly watches these events unfold and he secretly helps So Hwa. But in a cruel twist of fate, he is the one chosen to execute So Hwa's death sentence by serving her a bowlful of poison. After So Hwa dies, he looks after her son King Yeon San as if he were his own son.
The drama depicts the difficult decisions and moving human stories that take place daily in the OB-GYN department, focusing in particular on Seo Hye Young, a talented and determined obstetrician who has just transferred from the prestigious Seoul base to the branch hospital. Her straightforward manner of handling her professional life is in contrast with her love life, which is marred by her relationship with a married man. This becomes even moreentangled when she meets Lee Sang Shik, the chief of NICU, and her long-time friend Wang Jae Suk also shows his interest.
