It is the story of the figures of the two leading rival groups, with a setting in the wild realm of martial arts. Han Bi Gwang is the disciple of the head of sapa faction while Dam Hwa Rin is the granddaughter of Geum Hwang, the most respected one of jeongpa group. The main character, Han Bi Gwang, who is a recklessly courageous and optimistic person, by chance, becomes the sixth student of Cheonmashingun, the leader and trained to excel in martial arts. He is a genius who can remember all the martial arts movements after seeing it only once. The female protagonist, Dam Hwa Rin, is a beautiful lady who disguises herself as a man in order to find her missing grandfather, the head of jeongpa faction—and she happens to encounter Han Bi Gwang and they fall in love with each other.

In comparison with the traditional genre of martial arts comic books, “Fearless and Mighty Warrior” is funny and less elaborate, thus gaining huge popularity. The serialization started fifteen years ago and is still ongoing; it has also been published in a comic book form in other countries around the world with an online and mobile game version also being launched.