The cage of Rainbow City was broken, and the foursome defected to the abyss of the universe:
Su He turned into a spark, Shen Qingci burned his life to guide the way, Bai Yan's broken body was reshaped into a demigod, and Ling Xiao's withered bones carried the fire of civilization.
There is the eternal conspiracy of the Parliament before, and there is the darkness of the Abyss and the Eclipse Star behind.
The broken boat is drifting to the alien stars, and the singing voice is lingering on the other shore - looking for a sister to save the world or being buried together in the starry sky, the survival of the fire is at stake here.