An elite group of young warriors trained in morals and martial arts finds love and friendship in Silla during Korea’s ancient Three Kingdoms period.

Kim Chunchu is the grandson of King Jinji, but when his grandfather is overthrown, Chunchu is denied the chance to become a successor to the throne of Silla. He later meets Kim Yushin, and the two men begin a friendship. Chunchu later becomes King Muyeol, the 29th Korean monarch who leads the unification of three ancient kingdoms - Goguryeo, Baekje and Silla, while Kim Yushin becomes one of the greatest generals in Korean history.

Emperor of the Sea is a South Korean television drama series directed by Kang Il-soo and Kang Byung-taek and starring Choi Soo-jong, Chae Shi-ra, Song Il-gook and Soo Ae. It aired on KBS2 from November 24, 2004 to May 25, 2005 on Wednesdays and Thursdays at 21:50 for 51 episodes. The historical drama is based on Choi In-ho's novel of the same title, which depicts the life of Jang Bogo, who rises from a lowly slave to a powerful maritime figure who dominated the East Asia seas and international trade during the Unified Silla Dynasty.

The drama was received extremely well, holding the number one spot in the ratings for majority of the weeks it aired. It was also exported to eight countries earning approximately US$1.8 million in profits.

The filming set in Wando County, South Jeolla Province also became a tourist attraction.

This drama is loosely based on one of Korea's oldest folk songs. Suh Dong was the illegitimate son of the Baekje king and with the help of Princess Sun Hwa, the daughter of the king of the Silla, he went on to become the king of Baekje against all odds.