Yun Che, the only peacemaker in the immortal world, shoulders the fateful mission of reconciling the Nine Heavens and the Netherworld. There has been no war in the fairy world for a thousand years, but undercurrents are surging, and the boundaries between good and evil are gradually blurred in the starlight. Yun Che was supposed to be ruthless and desireless, but when he was mediating a dispute, he met Li Yao, a woman from the netherworld. She hides a forbidden secret that can pit the two worlds against each other forever. Yun Che struggled between his responsibility to protect the peace of the fairy world and the love surging in his heart, and was caught in a decision: should he choose the ideal of a harmonious world, or should he give up everything for the love in his heart? Their love is like a reflection of the stars, both gentle and dangerous. Every encounter may cause the world to shake. The story takes the fairy world peace conference as the main line, interspersed with Yun Che and Li Yao's poetic dialogue, soul collision, and the difficult journey of the two to break the barrier between the two worlds. The identity of the Messenger of Peace has become both a bond and a salvation - how can Yun Che use love and faith to break through the shackles of thousands of years and compose a romantic legend belonging to the fairy world?