It is late 1598, shortly before the Battle of Noryang, the final confrontation of the Imjin War. The remnants of the Japanese invasion force are desperate to go home, but are also driven by personal motivation to beat their greatest adversary, Admiral Yi Sun-sin, once and for all. Self-serving Ming generals and Joseon officials also fear Yi's growing popularity and its impact on their personal base of power. These incidentally combining ambitions fan King Seonjo's paranoia and make him eventually fear that Yi might come after his throne, and after a series of what he calls acts of high treason, he decides to have Yi arrested.