In 1592, with an army of approximately 158,000 troops, Toyotomi Hideyoshi launched what would end up being the first of two invasions of Korea, with the intent of conquering Joseon Korea and eventually Ming-dynasty China. Initially, the Japanese forces saw overwhelming success on land, capturing both Hanseong, the capital of Korea, and Pyongyang, and completing the occupation of large portions of the Korean Peninsula in three months. The Japanese forces, well trained, confident, and experienced after the numerous battles and conflicts of the Sengoku period, typically held the field in most land engagements. At the brink of the country falling to the Japanese forces, Joseon releases admiral Yi Sun-sin, the falsely-accused hero, from a prison cell, with the mission to save the nation. While all the bureaucrats begging to surrender, admiral Yi Sun-sin rejects the idea because he still has thirteen ships, including the legendary secret naval vessel, Geobukseon (turtle ship), to face one hundred and thirty three Japanese battle ships fast approaching the Korean Peninsula... Can admiral Yi Sun-sin save the nation?In 1592, with an army of approximately 158,000 troops, Toyotomi Hideyoshi launched what would end up being the first of two invasions of Korea, with the intent of conquering Joseon Korea and eventually Ming-dynasty China. Initially, the Japanese forces saw overwhelming success on land, capturing both Hanseong, the capital of Korea, and Pyongyang, and completing the occupation of large portions of the Korean Peninsula in three months. The Japanese forces, well trained, confident, and experienced after the numerous battles and conflicts of the Sengoku period, typically held the field in most land engagements. At the brink of the country falling to the Japanese forces, Joseon releases admiral Yi Sun-sin, the falsely-accused hero, from a prison cell, with the mission to save the nation. While all the bureaucrats begging to surrender, admiral Yi Sun-sin rejects the idea because he still has thirteen ships, including the legendary secret naval vessel, Geobukseon (turtle ship), to face one hundred and thirty three Japanese battle ships fast approaching the Korean Peninsula... Can admiral Yi Sun-sin save the nation?