Cheng Yi and Yicheng, just like their names, have been entangled for a lifetime since they first met. As the fourth prince, Xiao Yicheng always loses more than he gains. He has known the loneliness of his future since he was a child, so he will never let go of Cheng Yi, the only warmth in his life. And Cheng Yi has always adhered to the promise she made to him when she was a child, and will accompany him step by step to become the king of God. This is a story of trust and healing. Although the road to the palace is dark, with the company of another person, the heart feels like it belongs.