The cage of Rainbow City shatters, and the quartet flees into the abyss of the universe:
Su He turns into starlight, Shen Qingci burns through her life to light the way, Bai Yan shatters his body and remakes himself as a demigod, and Ling Xiao's withered bones bear the flame of civilization.
Ahead lies the Council's scheme for immortality; behind them, the darkness of the abyss devours stars.
Their battered vessel drifts to an alien world, where a song from the far shore lingers in the air. Find her sister and save the world, or perish together beneath the stars: the fate of the flame rests on this final gamble.
