游侠李元芳(fāng )本是一个赏金猎(liè )人联盟的首领,专(zhuān )门收钱替人解决麻(má )烦,游离于法律之(zhī )外,黑白通杀,江湖(hú )人称江南邪少。然(rán )而忽然有一天,不知(zhī )为何,他解散了他(tā )一手创立的罗网(wǎng )组织,造了一艘船(chuán )屋,四处流浪,行侠(xiá )仗(zhàng )义,于是江湖人又(yòu )改称他为江南剑(jiàn )少。两年后,李元芳(fāng )来到长安,在一家(jiā )小面馆结识了当朝(cháo )宰相狄仁杰,狄仁(rén )杰身兼朝廷多个(gè )要职,简直比杜甫(fǔ )还忙,最近又被武皇(huáng )加任为大理寺卿(qīng ),急需帮手,于是将(jiāng )李元芳收入麾下(xià ),任命他做了大理(lǐ )寺(sì )的总捕头。自那以(yǐ )后,每当遇到事,狄(dí )仁杰总会微笑着(zhe )问李元芳:“元芳(fāng ),关(guān )于此事,你怎么看(kàn )……”