You are an adventurer trying to adapt to a world newly at peace when a strange sickness appeared in your home town.
The Blissful Sleep makes each contaminated unable to fully wake up. It is not a huge danger for the sick, but you decide to go back home when you hear your sister caught it.
Soon after, you'll discover what is the real nature of the Blissful Sleep as you explore the world of dreams and try to not get kicked out by its inhabitants.