Zhao Duo, an ordinary social worker, struggles in the reinforced concrete of the city day after day. His life is as boring as a faded photo. At the instigation of his friend Wang Zeyu, he came into contact with a mysterious device called "Huanmeng", and since then he has stepped into a bizarre and dangerous world.
Here, fear takes form, eerie whispers linger in the ears, and the unknown Cthulhu-like existence drives people crazy. The power of dreams is dominated by a mysterious tarot card system. Every time you enter a dream, it may be a farewell. Zhao Duo, who goes by the pseudonym "Hine Tooth", must strictly abide by the iron rule: he must not sleep for more than nine hours a day, otherwise he will completely lose himself.
From the initial resistance and fear, to gradually adapting to the crazy alternation of reality and dreams.
Holding Tarot cards with unknown potential and the only items that can be brought from reality, Zhao Duo met his first partners and got a glimpse of the tip of the iceberg of this world.
When he finally mustered up the courage to embark on a journey with his companions, he didn't know yet that this journey would completely tear apart his original knowledge, lead him to face the abyss, and gain a glimpse of his own hidden true power.
The boundaries between reality and dreams are gradually blurring, and an adventure about survival, growth and truth has just begun.