Under the sky, forgotten eras are passing like ashes. Xuan Heng, the son of destiny in the past, is now a lonely figure Leng Feng. On the border that has been erased by history, he fights alone against the power of forgetfulness in the world. The gods are sleeping, old friends are betrayed, the world only remembers the sword that left traces on him, but does not recognize his silent compassion. Xuan Heng does not want to save the common people, but only wants to protect the last memory in a collapsing world - the truth that no one dares to remember. His enemy is invisible oblivion, and his ally is silent loneliness. Between ashes and ruins, Xuan Heng broke through the prison of time, not for glory, but to prove that even if the dust is annihilated, the existence of a hero can still tear apart the forgotten night.