Three hundred years ago, the elegant and spirited young man Yuan Tiangang, born with a doomed fate, unintentionally caused the death of his loved ones from a young age. As a result, he decided to gamble with fate and mastered the skill of "Chenggu Bone Divination," using it to target those whose lives were not supposed to end prematurely. At that time, it happened to be the end of the Sui Dynasty, with widespread chaos in the world. How will Yuan Tiangang change his destiny and become a notorious but respected leader amidst the turmoil of the late Sui Dynasty?

袁天罡，天生弃命格，客死家人后来到藏兵谷投奔叔叔。他15岁之际，天下大乱，负责守护龙渊剑的藏兵谷惨遭地煞们血洗，他再睁眼只见满山坟冢。从此以后，他决定与命一博，习得称骨算命之术，成为杀手且专杀命不该绝之人。35岁那年，在西北边陲的小镇上结识了买凶杀人的客栈老板娘幻音。幻音刺杀李渊寡不敌众，袁天罡前来营救时遇见了旧时故人李淳风。从此，龙渊再现江湖，袁天罡守护者的身份也公诸于世。是肩挑守护王朝的责任，还是归于江湖做行侠仗义的行者？不良帅的故事正在上演......