To protect her eldest sister, Yueling, the youngest princess of Dongyu, becomes engaged to Zhou Shiyu, the North Prince of Beishuo. During their journey to Beishuo's capital city, they face numerous assassination attempts. Their connecting jade pendant activates a Time Gate, allowing Yueling and Zhou Shiyu to repeatedly revive and strive to change their destiny while addressing their nation's challenges.

Hani Kezi, Xujia Yan, Zhang Jiayuan, Huang Qiao, Ma Sihan, Lin Junyi, Yu Zi Yang, Zha Jie, Wang Yitian, Yang Tao, Li Ang, Xin Nian, Chen Yu Nong, Hao Yiran, Ke Bolun