In the realm of flames, the three flames of heaven and earth intersect, and the blazing light and shadows weave into an endless secret realm. Chu Yao was originally an unknown wanderer hiding in the mountains, but due to a fire disaster, he was able to glimpse the "Backburning Contract" deep in the ancient flame core. According to legend, only those who bear the traces of the flames can travel through the secret realm and find the forgotten truth and salvation. Fire is neither pure light nor complete destruction. It breeds vitality in burning and buries hope in ashes. Chu Yao was not a born hero, and his motive was not to save the world, but to go astray for the memory that was taken away by the flames.
In the secret realm filled with red flames, Chu Yao will walk side by side with alien spirits, ancient night watchmen, and girls carrying curses. He wants to unravel Yanhuo's true will: to destroy everything, or to lead to new life? When the burden of saving the world is intertwined with personal obsession, Chu Yao can only find his own answer in the gap between flames and darkness.
The flames not only burn all things, but also forge the soul. Deep in the secret realm, can Chu Yao reinvent himself in the Yanhuo, or will he become another sacrifice of the Yanhuo?
