Heydan Kage, a seasoned scout, ventures amidst the nation of Katan, undertaking a series of quests. In this land, the convergence of mercenaries, merchants, and criminal activities intensifies, creating a volatile environment. A mysterious figure emerges, orchestrating a shift in the underground dynamics, influencing not only criminal enterprises but also the martial powers of the nation. As Heydan delves deeper into this intricate web of intrigue, the stakes rise.