Jun's 18th birthday has been selected by family tradition to be the day that her husband is chosen. Many high-class families have come to try to marry into the physically and economically powerful Asuka dynasty, but Jun is not interested. With her servant Kratta in tow, she runs away from the groom-choosing party.

故事的女主叫 JUN，是大财阀·明日香家的千金，相传谁要是能得到她，就能统治世界。但是她对母亲筹划的以财产为目标的婚事感到厌烦，18岁生日那天从会场逃跑。

由于JUN平时在柔道、空手道、健身等残酷的训练下制造出的钢铁般的肉体，看起来就是穿着高叉连体衣的个金刚芭比。她一边踢散执拗的追捕者，一边踏上寻找真正的“男人”的旅程。

为了追回JUN，明日香家宣布只要能抓到她赏金1亿日元。更有些邪恶势力想夺取JUN的处女之身来统治世界。最终JUN在管家的帮助下打败了她的母亲，原来她的母亲是被邪恶的意念控制了。