Han Yuan Niang is the eldest daughter of the Han Family, which holds military power at the northern border. She disguises herself as her twin brother Han Shi Yi, who passed away early, to ensure the Han Family's military power won't be affected by the court, as they have no male heir. She portrays herself as a lustful, weak, and uneducated man to fool those who want to pull her to their side. Unexpectedly, she becomes the companion of the 5th Prince, Chen Ting Yi, and helps him become the Crown Prince. Wang Zhong Yu, son of the Prime minister, eventually discovers Han Shi Yi's identity as a woman and their secret relationship. 讲真，这剧现在的热度太对不住这剧的质量。这样的结局也很好。看完感叹，谁都配不上韩十一。结局是HE的几个理由。女主比男主还帅！女扮男装吊打隔壁鞠婧祎，终于不把观众当傻子了。热度太对不起它的用心程度了。《女世子》结局还玉佩是放下？狗屁！。韩十一：谁把寸心炼成钢，红颜下战场。鞠婧祎、尤靖茹女扮男装打擂台，《女世子》终于不侮辱观众智商了。2.5星？。 故事主要讲述了定国公世子早夭，为了稳定军权，保证北境韩家军不被朝局影响，定国公长女韩元娘顶替双胞胎弟弟韩十一成为定国公府世子。韩十一对外塑造自己风流好色、不学无术的纨绔形象，却意外成为五皇子陈延易的伴读。在“被站队”五皇子阵营后，帮助五皇子出谋划策夺取储君之位，在这一系列的风浪中五皇子与王丞相之子王仲钰发现了韩十一的女子身份并暗生情愫，期间发生了一系列啼笑皆非的故事。
