Korean naval commander Lee Soon-Shin survives the Battle of Noryang on December 16, 1598. With the help of a woman named Heo Cho Hee, Lee Soon-Shin then tries to build a nation dominated by its waters and goes up against King Sunjo.
(Source: AsainWiki)
~~ Drama series contains a mixture of fact and fiction around legendary Korean naval commander Lee Soon Shin. Lee Soon Shin died at the Battle of Noryang onDecember 16, 1598, but the series builds off of the premise that he survived.