The innocent eldest princess Zhao Mingzhao of Zhaoyang was over-protected by the emperor's brother and developed a wanton temper. The new crown prince, Tutor Xie Yanqing, was a gentleman, but he "disciplined" her in every possible way, and the two became the most famous happy enemies in Beijing. In the battles of wits and courage, love secretly arises. However, when the princess' family suffered a sudden change and she fell from the clouds, the only person she could turn to was the "gentleman" who had been tit-for-tat with her. He extended a helping hand, but the price was to imprison her in a small place. The imprisonment in the name of protection and the calculation in the name of love made her gradually sink. Until the truth is revealed, his tenderness is a revenge tailor-made for her from beginning to end... The intertwining of love and hate is the difficult choice between two sincere hearts in machinations and blood feuds.