This movie is a remarkable milestone for the most visually impressive and energy intensive Korean war movie ever focusing on naval battle in ancient warships. Although it's loosely served as the prequel of Roaring Currents and a younger Yi Sun Sin on deck, the naval battle sequences in here that lasted for almost an hour is bigger, bolder and better with enormous clashes due to cinematic advancement. The battle scenes are so realisitic it's unbelievable how they've manage to shot those scenes that contains sheer amount of power in great precision. The intense story buildups for the war campaign, the emotional acting and explosive soundtrack, this is certainly the perfect package for spectacular cinema.