乾隆年間,紅花會(huì)崛起,企圖推翻滿清統(tǒng)治。紅花會(huì)總舵主于萬(wàn)亭偷入禁宮,告以乾隆(任達(dá)華)本乃漢人之身世,乾為安全計(jì),殺于滅口。于之義子陳家洛(彭文堅(jiān))乃乾胞弟,于死后接任為總舵主,繼承反清復(fù)漢大業(yè),