The movie primarily follows the well-known 1597 Battle of Myeongryang in the course of the Japanese invasion of Korea 1592-1598, the place the enduring Joseon admiral Yi Solar-sin managed to destroy a complete of 133 Japanese warships with solely 13 ships remaining in his command. The battle, which occurred within the Myeongryang Strait off the southwest coast of the Korean Peninsula, is taken into account one of many biggest victories of Yi.
