After the Japanese Invasion of Korea in 1592, Iljimae, a master of the interlaced sword method, heads to Japan to find the national treasure, the Cheonryongsword, which was robbed by the Japanese pirate Kuroda. Around this time, there were two more men looking for Kuroda, one of them was Ma-cheol, a one-armed swordsman who lost his left arm due to Kuroda's trick, and the other was Kuroda's henchman Okamodo, who lost his newlywed wife and even lost his own eyes. This is Yoshiyama, the swordsman who lost his mind. At first, the three knights, who met by chance, were wary of each other for their own goals, but were captured by Kuroda's persistent pursuit. In the end, after a bloody fight, they succeed in revenge, and Iljimae returns home with the recovered Cheonryongsword.
Sin Yeong-il
Kim Ki-joo
Kim Hee-ra
An Gil-won
Kim Yeong-ae
An Jae-eun
Chang Hyeok
Lee Ye-min
Dokgo Sung
Hong Seong-jung
Jang Jeong-Kuk
Jin Bong-jin
Lee Gi-yeong
Lee Ye-seong
Choe Jun
Im Seong-po
Yang Chun
Kim Ki-beom
Ju Sang-ho
Kim Tae-hyeong
Lee Seok-ku
Kim Woo-seok
Kim Yeong-bok
Jeong Man-do
Cho Hak-ja
Park Yang-mi
Kim Min-su
Martin Choe Min-Kyu
Ji Bang-yeol
Park Byeong-gi
Son Jun
Kim Gyeong-o
Kwak Seon-ho
Lee Tae-jin
Kim Tae-seon
Chae Jang-jin
An Il-ryeok
Kim Yong-hak
Gwak Choel-seong
Lee Gyeong-ryeo