The story of The Breaker follows Shiwoon Yi, a timid high school student who becomes the disciple to Chunwoo Han, an extremely talented martial artist who is an enemy to the secret martial arts society known as the Murim. However, Shiwoon is naive and unaware of his master's past and the unseen underbelly of the society. How will Chun Woo manage to teach Shiwoon and help him survive in the brutal world of Murim?