元初，元人派大将军莽依图（陈观泰 饰）灭反元分子；反元联盟潜龙帮正处外忧内患，石副帮主遭暗杀，帮主伏夷亦告病逝，帮中元老邝老师（谷峰 饰）等，遂推举少帮主伏中原（惠天赐 饰）继任，负责寻回藏有结盟名册之龙凤棍。岂料举行册立大典之际，石夫人（刘雅丽 饰）突然闯进，出示两封证明中原为元人的信件，中原百辞难辩，遂私下追寻身世真相。期间中原往将军府盗取结盟名册时，几乎遇险，幸为女飞贼林雪儿（戴良纯 饰）所救……

It has to do with a young clan member, Zhong Yuan, who is promoted to chief of the Dragon Gang after his adoptive father dies, only to be expelled when a letter arrives revealing him to be of Mongol birth, an awkward bit of news at a time when the Dragon Gang is actively fighting Mongol occupiers. In fact, Zhong soon learns that the Mongol general leading the anti-rebel campaign is actually his real father. Still, he persists in trying to get back into the good graces of the clan, eventually helping to ferret out a traitor in their midst.

Le chef d'un gang décède et choisit son fils pour lui succéder, et bouter les mongols hors de Chine. Pendant la cérémonie d'investiture, un couple fait irruption er accuse le nouveau chef d'être lui-même un mongol...