Dam-Ho, the sole survivor of a raid on his village, has a lame leg, the worst possible condition for a martial artist. Nonetheless, he refuses to stop training. Whilst everyone around him tells him he cannot become a martial artist, Dam-Ho refuses to give up on his dream. Will he really be able to become the best martial artist?
When the world was plunged into darkness martial artists gathered to form the ‘Northern Heavenly Sect’. With the help of the Northern Heavenly Sect people began to enjoy peace again. However, as time passed the martial artists began to conspire against the ‘Northern Heavenly Sect’, and eventually caused the death of the Sect Leader, Jin Kwan-Ho, destroying the sect with it. As everyone left the sect, Jin Kwan-Ho’s only son, Jin Mu-Won was left behind. Mu-Won has never learned martial arts, but he finds the Techniques secretly left behind by his father and begins to acquire the martial arts of the Northern Heavenly Sect.
Breathing does not guarantee everyone's alive! Dan Sa Yu, a descendant of Goryeo, greatly reprimands the Central District for the sake of his friend whom he treasures the most. He reigns every battle! No one could stop him! Cheonpo Armed Forces. The greatest martial arts of Goryeo! The legend of Cheonpo Armed Forces lives on while the history of the King of War unfolds!