The film mainly follows the famous 1597 Battle of Myeongryang during the Japanese invasion of Korea 1592-1598, where the iconic Joseon admiral Yi Sun-sin managed to destroy a total of 133 Japanese warships with only 13 ships remaining in his command. The battle, which took place in the Myeongryang Strait off the southwest coast of the Korean Peninsula, is considered one of the greatest victories of Yi.

With the help of a gutsy female detective, a prosecutor who has lost the ability to feel empathy tackles a murder case amid political corruption.

Two brothers were separated in childhood at an orphanage, only to find each other as adults 30 years later. But right after their reunion, their birth mother, who suffers from Alzheimer's disease, suddenly disappears. So Sang-yeon (a pastor raised in America) and Ha-yeon (a shaman) team up together and go on a road trip to search for her.

By chance, a man and a woman meet on the KTX train and spend 24 hours in the unfamiliar city of Busan, South Korea.

When a crime organization from North Korea crosses borders and enters South Korean soil, a South Korean detective must cooperate with a North Korean detective to investigate their whereabouts.