Xiao Yu Erh, separated from his twin as a baby after his parents are murdered and taken by a family friend to "Villains Valley," where he's raised to be a "villain" by a host of outlaws, each of whom has a special skill. When he's old enough, he devises clever means to trap each of his "uncles" and escape the valley to head off into the outside world. A chance encounter with a beautiful girl dressed as a man leads to a treasure hunt and eventually a confrontation with the Princess of Yi Hua Palace. ~~ Adapted from Gu Long's novel Jue Dai Shuang Jiao.