А Си наделена сверхчеловеческой силой, ее железный кулак непобедим. Родители продают А Си в Шанхай, но девушка не намерена влачить жалкое существование. Могущественный евнух Пэй становится ее покровителем и теперь А Си намерена избавить один из районов Шанхая от опиума, азартных игр и проституции.
A young girl with magical powers is trafficked to Shanghai by her smoke-addicted parents to become a dancer. She became famous in the French Concession with her iron fist. She became famous in the French Concession for her iron fist and became a person of high moral standing.
Shui Sheng witnessed his father being killed by the "water monkey" monster when he was young. Ten years later, the water monster reappeared and killed the younger brother and father of the heroine Xiang Lan. In order to save her, Shui Sheng launched a fierce battle to break feudal superstitions and to catch the water monster.