In a world where cultivators navigate the “Astral Sea”—a metaphysical ocean of starlight that reflects the fate of the world—Yi Fan is a cripple. Born with a “Fractured Core,” his spirit is like a shattered compass, unable to sense the currents of destiny or draw power from the constellations. As a lowly lamp-lighter for the Celestial Chart Sect, he can only illuminate the star-maps he can never sail. He discovers an ancient astrolabe that doesn’t read the stars of the present, but the faint, dying light of stars that have already fallen. As a cosmic blight known as the “Star-Rot” begins to extinguish the heavens, Yi Fan must learn to navigate by the light of dead memories to chart a new course for a world that has lost its way.