There are nightmares in this world, and one is called the Dream-Devouring Demon.
It slips into people's sleep and devours their dream souls. They die without a sound, leaving behind only a nightmare from which they will never wake.
A dream of his entire family being slaughtered was the beginning of Yun Han's nightmare.
His father died in a nightmare, and his mother nearly met the same fate. At the moment of utter despair, he awakened the power to slay dreams and fought for his life against demons within the dreamscape.
He joined the Nightmare Suppression Bureau at Prince Ning's residence, where his exceptional talent earned Prince Ning's favor.
Caught between court intrigues and sinister dreams concealing deadly threats, he thinks carefully before acting and fights for survival at every turn. He puts his own side's safety first, never behaving like a reckless fool who throws his life away for a cause.
One mysterious nightmare disaster after another, one scattered clue after another.
Amid endless battles and attempts to break through impossible situations, the boy slowly comes of age.
Starting at the Nightmare Suppression Bureau, his journey is about more than slaying the Dream-Devouring Demons that roam the world. He must also find the source of the calamity and bring this unending nightmare to an end with his own hands.