The Doll of Twin Girls tells the story of Da Zhuang and Zhao Di. Da Zhuang and Zhao Di have been good friends since childhood. When he grew up, Da Zhuang fell in love with Zhao Di, while Zhao Di fell in love with Hadron. Da Zhuang hates Hadron because of love. On one occasion, Da Zhuang and Hadron had an argument over a trivial matter. Da Zhuang took advantage of Hadron's unprepared, picked up a stone and killed Hadron. Seeing this, Zhao Di was heartbroken and decided to break up with Dazhuang.