故事的男主人公在一场宫廷政变中亲眼目睹了父亲被残忍杀害、母亲和姐姐被迫成为阶下囚的惨痛事件。深受打击的他直接失去了记忆，后来他被铁石家收养，他长大后的他成了一个市井混混，在他逐渐恢复了记忆，他一直怀疑父亲的死一定有蹊跷。但是男主唯一的线索就是当年刺死父亲的那一把剑，为了找到剑的下落和真凶，他一到晚上就蒙着面出现，在偷盗现场留下一朵红梅。后来江湖上就到处传言他是一个义贼，称他为“一枝梅”。男主向来只偷盗那些有钱有势的贪官污吏们，他勇敢的和腐朽势力对抗，他就逐渐成了很多朝廷官员痛恨的人物。但是男主确是很多百姓的希望，很多人都不知道他的真正来历，与此同时，他和他同父异母的哥哥、和初恋等人之间的爱恨情仇也即将展开.....

The hero of the story witnessed the tragic incident of his father being brutally murdered and his mother and sister being forced to become prisoners in a palace coup. He was deeply shocked and immediately lost his memory. Later, he was adopted by Tieshi's family. When he grew up, he became a street gangster. After he gradually recovered his memory, he always suspected that there must be something strange about his father's death. But the only clue for the male protagonist is the sword that stabbed his father to death. In order to find the whereabouts of the sword and the real murderer, he would appear at night with his face covered, leaving a red plum at the scene of the theft. Later, there were rumors everywhere in the world that he was a righteous thief, calling him "Yizhimei". The male protagonist has always only stolen from the rich and powerful corrupt officials, but he bravely confronted the corrupt forces, and he gradually became a figure hated by many court officials. But the male protagonist is indeed the hope of many people, and many people don't know his true origin. At the same time, the love and hatred between him, his half-brother, and his first love and others are about to unfold... ...