小子北京狗跟随骗子无皮柴行走江湖。一日两人接受光棍七的委托去谋杀职业杀手人渣炳,计划是利用人渣炳好色的弱点,以光棍七之美艳妻子实行色诱。岂料当计划进行顺利之际,三人欲下手之时,人渣炳有所发觉,众人落荒而逃……"Nobody" is an orphan who grows up stealing food to survive and learning some simple skills as a con artist. When he meets a true master con artist, he begs to become a pupil and learn some tricky Kung Fu.