Shen He, the concubine of the Shen family in Qinghe, became an official slave after his family was wronged, and unexpectedly entered the residence of Xiao Heng, the third son of the emperor. Xiao Heng was cold and arrogant, while Shen He was cold and self-possessed. The two got to know each other amidst the struggle for imperial power. The identity gap is like a chasm, and the conspiracy is like a dense network. They warm each other in the undercurrent and move forward side by side in the cracks. When the truth is revealed and the throne is settled, the starlight that was once out of reach will eventually illuminate each other's lives.