Dowon-gyeol, the unfortunate illegitimate son forced to live a life of hardship, spends his days searching for an assassin to kill his half-brother Do Chung-won, who humiliates him daily. During his desperate hunt, he encounters Gong Hyeon, a butcher with astonishing archery skills. Seeing an opportunity, Dowon-gyeol decides to use Gong Hyeon for his own revenge—dragging the reluctant man into a scheme doomed to end in tragedy…