"In 1597, the Joseon Dynasty was full of crises. The main force of the Korean Navy suffered a huge blow when General Yi Sun-shin (played by Choi Min-sik) was demoted. Military discipline collapsed and only a few warships remained. The Japanese pirates are waiting for the opportunity to send Anji Wakizaka (played by Zhao Zhenxiong) to cooperate with the feared "One Piece" to the island general (played by Liu Chenglong)..."