Seeking liberation from the oppressive Divine Justice Alliance, skilled assassin Hajin Cheon strives to escape, only to face off against martial artists from various factions, ranging from traditional to unorthodox. After a brutal battle for independence leaves him gravely injured, he finds himself reborn in the body of Ryang Seo, a prince belonging to the infamous Heavenly Demon Cult, burdened with a condition that blocks his qi manipulation. To navigate this unfamiliar existence, Hajin must confront the perils and adversaries residing within the enigmatic cult.