Chen Xiao Qian, an unknown screenwriter who's been single since birth, worked really hard and finally finished a grand drama of a heroine. It was planned to started filming, but stopped because the actor Han Ming Xing questioned a lot about the script. One day, she accidentally got stuck in her own script and turned into the third princess of Huayan city, a city where females dominate. The third princess past self was determined to marry Han Shuo, a crown prince of the enemy city despite being engaged to Pei Heng, a ministry of education. The little support role of Third Princess revises the whole play to survive and eventually develop her relationship between prince Han Shuo and Pei Heng.