The staff of "The Admiral: Roaring Currents", the biggest film of all time at the South-Korean box office, has assembled once again for a documentary. Critically acclaimed director KIM Han-min and his team delves into the actual background, prelude, and preparations of Admiral YI Sun-sin in 1597 and how the admiral’s battle plans have won him his most remarkable victory throughout his career.

Min-tae, a once-notorious gangster who now leads a peaceful retired life, discovers the bloody corpse of his only next of kin: his younger brother Seok-tae. With his brother’s missing wife Moon-young as the prime suspect, Min-tae uncovers a suspicious last phone call between her and a mysterious novelist, sparking a vicious hunt for the truth despite his seemingly deceitful former crime syndicate and the police in hot pursuit.

该片记录的是金汉珉导演和演员大谷亮平等，一起重走韩国民族英雄李舜臣将军当年水军1234公里重建路的经历，将带领观众一起发现李舜臣更多的故事。 该片是在《鸣梁海战》上映之后，因为影片内容有一部分夸张，和日本有历史纪录上的矛盾而引起轩然大波，金汉珉导演为了能够告诉观众鸣梁海战的真正意义而企划的纪录片。在几位主创探访的过程中，会展现李舜臣将军人性化的一面，以及他为了百姓和国家的苦恼，可说将展现一个前所未有的李舜臣。