In the Lan Teng Dynasty, Princess Xinglan, as the emperor's favored daughter, breaks away from the shackles of the boudoir. She has a free and easy personality and loves freedom. She is obsessed with dynamic sports such as polo and Cuju. She is bold and proactive when it comes to relationships. In order to explore Mo Yiqing's feelings, she disguised herself as a man and traveled with him under the pseudonym "Ding Hao".
She met Prince Mo Xiao, Mo Yiqing, while playing polo in the suburbs. Mo Yiqing has strong martial arts skills and handsome appearance, but due to his regretful affair with Ji Yueyao (later revealed to be his biological sister) in his early years, he has a cold and arrogant personality and rejects marriage between aristocratic women and the royal family.
The emperor proposed to marry the two, but Mo Yiqing refused. During the trip, Xinglan saw Mo Yiqing's gentleness despite his cold arrogance. Mo Yiqing was also attracted by "Ding Hao"'s vitality and sincerity, and his love gradually grew. The Queen changed her marriage to Lin Jingzhi, and Mo Yiqing solved the knot. On the night of her wedding, Xinglan arranged for her sister to marry on his behalf, and stayed with Mo Yiqing under the name "Ding Xinglan". The story also interspersed the emotional lines of Mo Yixuan and Lu Qicai, showing everyone's pursuit of true love and freedom.