There are three types of death in this world: normal death, being obliterated by the dream demon, and being lost in the illusion and trapped forever.
Human beings who escape from the nightmare will awaken their abilities and form the "Dream Watchers" organization. They can stay awake in other people's dreams, enter other people's dreams to hunt dream demons, and save the lost. The cost of each time they enter other people's dreams or illusions is that their own memories quietly disappear little by little, but they don't know...
Purpose: growth, protection, love