Set during the Imjin War in December 1598, Admiral Yi Sun-shin faces a critical moment as the Wa invaders prepare to withdraw following their leader’s death. Determined to end the conflict, he leads a combined fleet of Joseon and Ming ships to blockade and defeat the enemy. However, when Ming commander Chen Lin is bribed to lift the blockade, the Wa lord Shimazu Yoshihiro seizes the opportunity to rescue his troops at Noryang Strait, igniting a fierce battle for survival and victory.