 Based on the life and actual diaries of Navy Admiral Lee Soon Shin (or Yi Sun Shin) this historical epic television series follows the man who would become a legend and hero in Korean history. During the Choseon Dynasty, Lee Soon Shin was responsible for constructing the Geobukseon, or Turtle Ships, and turning the tides of the Seven-Year War against Toyotomi Hideyoshi s Japanese fleets. The historical epic television series depicts his life, from his early days struggling to become a magistrate to his final battle against Japan. Through a diverse ensemble cast, the story also shows life for the royal families of Korea and Japan, and civilians during that era.