Thousands of years ago, Xuansu was the most silent shadow among the gods, in charge of forgetfulness and disappearance. He witnessed how human beings were weak against fate, and also witnessed the gods gradually withering due to arrogance. Sleeping among the mountains and seas, he should have been lost to history, but he suddenly woke up because the memory of the world was tampered with on a large scale. The once divine power was no longer brilliant, and Xuan Su had no choice but to wander around the world as a mortal, pursuing the truth that had been erased by humans. Every forgotten name and every piece of history that has been tampered with is a clue to his recovery; and those forces eager to control memory regard Xuansu as the biggest threat. Struggling between divinity and humanity, Xuan Su must decide whether to protect the truth or adapt to oblivion. Destiny has long been shattered, and only by picking up the scattered memory fragments can the sleeping world be awakened. This is a journey about forgetting, redemption and self-definition - between reality and illusion, can Xuansu find the answer for all living beings and himself?