In the prosperous small town of Jiangzhou, there is an inconspicuous inn at the end of an alley, named “Nanke Meng”.The proprietress Akko has an unknown origin and unknown identity. She looks arrogant and beautiful, but has an extremely weird personality. Her emotions are unpredictable, and she often loses her temper in front of the guests.But despite this, the business of the inn is still booming, and there is an endless stream of people queuing up to stay, because everyone is surprised to find that as long as they fall asleep here, the troubles that linger in their minds after waking up will miraculously disappear, and they can sit back and relax..

《Books and Records of the Later Han Dynasty》contains: “ Xiong Bo eats for magic, Teng Jian eats for bad omen, takes all the blame for eating, and Bo Qi eats in dreams.”The Birch tribe has received divine power and is immortal. They are stationed in one place and bear the responsibility of eliminating the troubles of the people staying there. They make a living by eating nightmares.And “Nanke Meng”'s proprietress A'ke is his descendant.Compared with other tribesmen who performed their duties conscientiously, Akko was full of complaints about this job at first. She couldn't understand why the Birch tribe had to eat those weird, dark and obscure nightmares if they wanted to survive.But as time goes by and the years change, Akko has met many people, including a young child born deaf and mute, an elderly man suffering from chronic illness, a desperate woman who cannot love, and an iron-blooded general on the battlefield...

Without exception, they will cry sadly in “Nanke Meng”, leaving behind their worries about these three thousand mortal worlds.Akko observed the mixed flavors of the world in the dreams of these people, and gradually learned many things that he didn't understand before...